What is incorrect for bryophytes [RPMT 1997]

Asexual reproduction by zoospores absent

Gametophyte reduced and dependent

Asexual reproduction by zoospores absent

Assertion : Bacteria do not always move with the help of flagella. Reason : Flagellated bacteria employs rotary motion of flagellum when it moves.

If the assertion is true but the reason is false

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

If the assertion is true but the reason is false

If both the assertion and reason are false

If the assertion is false but reason is true

Assertion : The peristome is a fringe of teeth-like projections found at the mouth of the capsule. Reason : It may be of two types nematodontous and orthodontus.

If the assertion is true but the reason is false

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

If the assertion is true but the reason is false

If both the assertion and reason are false

If the assertion is false but reason is true

The use of nicotine causes

Lung cancer, epilepsy, psychosis

Lung cancer, mouth cancer, epilepsy

Lung cancer, mouth cancer, chronic bronchitis

? Primary growth of a tree

Occurs through the activity of a vascular cambium

Occurs through the activities of apical meristems

Occurs through the activity of a vascular cambium

Occurs through the activity of the root cap

Occurs only in the first year of the tree's life

If R. Q. is less than 1.0 in a respiratory metabolism, it would mean that:

The oxidation of the respiratory substrate consumed less oxygen than the amount of \[C{{O}_{2}}\] released.

Carbohydrates are used as respiratory substrate.

Organic acids are used as respirator substrate.

The oxidation of the respiratory substrate consumed more oxygen than the amount of \[C{{O}_{2}}\] released.

The oxidation of the respiratory substrate consumed less oxygen than the amount of \[C{{O}_{2}}\] released.

Of the world's top five crops in terms of annual production, which of the following statement is correct?

Three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae.

All five belong to the family Poaceae (Gramineae).

Four belong to Poaceae (Gramineae) and one to Leguminosae.

Four belong to Poaceae (Gramineae) and one to Solanaceae.

Three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae.

In ATP high energy bond is present [CPMT 2005]

Between nucleoside and phosphate group

Between sugar and phosphate group

Between base and phosphate group

A small, isolated population:

will grow, but extremely slowly.

will do extremely well if protected.

is unlikely to survive, even within a reserve.

will grow, but extremely slowly.

will given the right conditions.

What is competitive exclusion?

The evolution of traits that reduce niche overlap and competition.

Interactions that allow species to occupy their fundamental niche.

The degree to which the niches of two species overlap.

The claim that species with the same niche cannot coexist.

Root pressure is higher when:

Transpiration is very high and absorption is high.

Transpiration is very low and absorption is high.

Transpiration is very high and absorption is high.

Transpiration is low and absorption is low.

Transpiration is high and absorption is low.

Transgenic plants are the ones:

produced after protoplast fusion in artificial medium.

produced by a somatic embryo in artificial medium.

generated by introducing foreign DNA in to a cell and regenerating a plant from that cell.

produced after protoplast fusion in artificial medium.

grown in artificial medium after hybridization in the field.

Which of the following correctly traces the energy of sound waves into the ear

Eardrum-auditory canal-cochlea-ear bones

Auditory canal-eardrum-ear bones-cochlea

Eardrum-auditory canal-cochlea-ear bones

Auditory canal-ear bones-eardrum-cochlea

Eardrum-auditory canal-ear bones-cochlea

Read the assertion and reason carefully: Assertion : Bud may form leaves and flowers. Reason : Bud is a condensed shoot.

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

If the assertion is true but the reason is false

If both the assertion and reason are false

If the assertion is false but reason is true

Haversian canals of long bones have [CPMT 1984]

Some bone cells, fat and areolar tissue

One child is haemophilic (sex-linked trait), while its fraternal twin brother is normal. Which one of the following informations is most appropriate?

The child is a monozygotic twin.

The mother must have been heterozygous.

The child is a monozygotic twin.

The other child is a female and the father is haemophilic.

The haemophilic child is a male.

The law of segregation of characters is also. called the law of purity of gametes because:

gametes cannot be contaminated.

gametes have only one of the two alleles for each character.

gametes cannot be contaminated.

gametes are very different type of cells.

Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring were analysed. Which of the following statements about this situation is correct?

The offspring are either all homozygotes or all heterozygotes.

The offspring represent the \[{{F}_{1}}\] generation and the gametes produced by the offspring will carry only one allele for this gene.

14620 + Mcqs in Biology in NEET Page 8 McqOptions

351.	In stem which layer forms epidermal tissues
A.	Dermatogen
B.	Periblem
C.	Plerome
D.	Calyptrogen
Answer» B. Periblem

Discussion

352.	Mineral present in red pigment of vertebrate blood is [CBSE PMT 1989]
A.	Magnesium
B.	Iron
C.	Copper
D.	Calcium
Answer» C. Copper

Discussion

353.	The best supporting fact that "Viruses are living'' is that viruses [NCERT 1978]
A.	Are made of chemicals
B.	Cause diseases
C.	Duplicate themselves
D.	Penetrate cell membrane
Answer» D. Penetrate cell membrane

Discussion

354.	Which of these is the best source of vitamin A?
A.	Apple
B.	Honey
C.	Carrot
D.	Peanuts
Answer» D. Peanuts

Discussion

355.	What is incorrect for bryophytes [RPMT 1997]
A.	Vascular tissue lacking
B.	Independent sporophyte absent
C.	Gametophyte reduced and dependent
D.	Asexual reproduction by zoospores absent
Answer» D. Asexual reproduction by zoospores absent

Discussion

356.	Viscum is [BHU 1985; AFMC 2004]
A.	Partial root parasite
B.	Partial stem parasite
C.	Total root parasite
D.	Total stem parasite
Answer» C. Total root parasite

Discussion

357.	Assertion : Bacteria do not always move with the help of flagella. Reason : Flagellated bacteria employs rotary motion of flagellum when it moves.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» C. If the assertion is true but the reason is false

Discussion

358.	Assertion : The peristome is a fringe of teeth-like projections found at the mouth of the capsule. Reason : It may be of two types nematodontous and orthodontus.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» C. If the assertion is true but the reason is false

Discussion

359.	The use of nicotine causes
A.	Lung cancer, epilepsy, psychosis
B.	Lung cancer, mouth cancer, epilepsy
C.	Lung cancer, mouth cancer, chronic bronchitis
D.	All of the above
Answer» D. All of the above

Discussion

360.	Venter is the part of [CPMT 1989; JIPMER 1985]
A.	Sporogonium
B.	Sporangium
C.	Antheridium
D.	Archegonium
Answer» E.

Discussion

361.	Which plant will lose its economic value, if its fruits are produced by induced parthenocarpy?
A.	Grape
B.	Pomegranate
C.	Orange
D.	Banana
Answer» C. Orange

Discussion

362.	Match column-I with column- II and select th correct answer using the codes given below. Column-I Column-II A. Ovary I. Groundnut, mustard B. Ovule II. Guava, orange, mango C. Wall of ovary III. Pericarp D. Fleshy fruits IV. Seed E. Dry fruits V. Fruit
A.	A-V; B-IV; C - III; D-II; E-I
B.	A-I; B-II; C-III; D-IV; E-V
C.	A-I; B-III; C-II; D-IV; E-V
D.	A-V; B-IV; C-I; D-II; E-III
Answer» B. A-I; B-II; C-III; D-IV; E-V

Discussion

363.	A family has five girls and no son. Probability of son as the 6th child will be [AFMC 1983, 84, 2000; CPMT 2005]
A.	0.5
B.	0.75
C.	Full
D.	No chance
Answer» B. 0.75

Discussion

364.	Oblique ovary is found in family [DPMT 2004]
A.	Brassicaceae
B.	Compositae
C.	Leguminosae
D.	Solanaceae
Answer» E.

Discussion

365.	? Primary growth of a tree
A.	Occurs through the activities of apical meristems
B.	Occurs through the activity of a vascular cambium
C.	Occurs through the activity of the root cap
D.	Occurs only in the first year of the tree's life
Answer» B. Occurs through the activity of a vascular cambium

Discussion

366.	Identify the characteristics of IUDs. (i) Increase phagocytosis of sperms. (ii) Releases Cu ions that suppress sperm motility and fertilising capacity of sperms. (iii) Make the uterus unsuitable for implantation. (iv) Make the cervix hostile to sperms. (v) Prevent semen from entering the female reproductive tract.
A.	(i), (ii), (iii), (iv) and (v)
B.	(i), (ii), (iii) and (iv)
C.	(i) and( ii)
D.	(ii),(iii) and (iv)
Answer» C. (i) and( ii)

Discussion

367.	The accompanying diagram shows the uterine tubes of four women (P, Q, R and S). In which of two women, fertilisation is impossible at present?
A.	P and Q
B.	Q and R
C.	R and S
D.	S and P
Answer» D. S and P

Discussion

368.	If R. Q. is less than 1.0 in a respiratory metabolism, it would mean that:
A.	Carbohydrates are used as respiratory substrate.
B.	Organic acids are used as respirator substrate.
C.	The oxidation of the respiratory substrate consumed more oxygen than the amount of \[C{{O}_{2}}\] released.
D.	The oxidation of the respiratory substrate consumed less oxygen than the amount of \[C{{O}_{2}}\] released.
Answer» D. The oxidation of the respiratory substrate consumed less oxygen than the amount of \[C{{O}_{2}}\] released.

Discussion

369.	Which organism is used to obtain the single cell protein [AMU 2005]
A.	Bacteria
B.	Yeast
C.	Filamentous Fungi
D.	All of the above
Answer» C. Filamentous Fungi

Discussion

370.	An infection would most likely increase phagocytic activity in:
A.	Elastic tissue
B.	Transitional tissue
C.	Adipose tissue
D.	Reticular tissue
Answer» E.

Discussion

371.	Which of the following is a viral disease of poultry birds?
A.	Anthrax
B.	Ranikhet
C.	Coccidiosis
D.	None of these
Answer» C. Coccidiosis

Discussion

372.	Of the world's top five crops in terms of annual production, which of the following statement is correct?
A.	All five belong to the family Poaceae (Gramineae).
B.	Four belong to Poaceae (Gramineae) and one to Leguminosae.
C.	Four belong to Poaceae (Gramineae) and one to Solanaceae.
D.	Three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae.
Answer» D. Three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae.

Discussion

373.	Bacteria are made up of [Bihar MDAT 1995]
A.	Nucleic acid
B.	Only proteins
C.	Nucleic acid and proteins
D.	Nucleosides
E.	(e) None of these
Answer» D. Nucleosides

Discussion

374.	In ATP high energy bond is present [CPMT 2005]
A.	Between nucleoside and phosphate group
B.	Between sugar and phosphate group
C.	Between base and phosphate group
D.	None of these
Answer» E.

Discussion

375.	The sun loving plants are referred to as:
A.	Halophytes
B.	Heliophytes
C.	Heterotrophs
D.	Sciophytes
Answer» C. Heterotrophs

Discussion

376.	Which of the following communities is more vulnerable to invasion by outside animals and plants?
A.	Tropical evergreen forests
B.	Oceanic island communities
C.	Mangroves
D.	Temperate forests
Answer» C. Mangroves

Discussion

377.	A weed belonging to family Asteraceae which has spread in all parts of India is [AIIMS 1992; MP PMT 1992]
A.	Nicotiana
B.	Oryza
C.	Parthenium
D.	Hordeum
Answer» D. Hordeum

Discussion

378.	The gametophyte of fem bears:
A.	True roots
B.	Antheridia
C.	Archegonia
D.	Both [b] and [c]
Answer» E.

Discussion

379.	A small, isolated population:
A.	will do extremely well if protected.
B.	is unlikely to survive, even within a reserve.
C.	will grow, but extremely slowly.
D.	will given the right conditions.
Answer» C. will grow, but extremely slowly.

Discussion

380.	What is competitive exclusion?
A.	The evolution of traits that reduce niche overlap and competition.
B.	Interactions that allow species to occupy their fundamental niche.
C.	The degree to which the niches of two species overlap.
D.	The claim that species with the same niche cannot coexist.
Answer» E.

Discussion

381.	In aquatic system, actively moving animal organisms are:
A.	Benthic
B.	Nektons
C.	Zooplanktons
D.	Phytoplanktons
Answer» C. Zooplanktons

Discussion

382.	Bipolar nerve cells are present in:
A.	Skin tactile corpuscles
B.	Spinal cord
C.	Retina of eye
D.	All of the above
Answer» D. All of the above

Discussion

383.	Root pressure is higher when:
A.	Transpiration is very low and absorption is high.
B.	Transpiration is very high and absorption is high.
C.	Transpiration is low and absorption is low.
D.	Transpiration is high and absorption is low.
Answer» B. Transpiration is very high and absorption is high.

Discussion

384.	The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?
A.	Four
B.	Seven
C.	Six
D.	Five
Answer» B. Seven

Discussion

385.	Which of the following chromosome arrangement is symbolised by 2n + 2?
A.	Tetraploid
B.	Nullisomic
C.	Trisomic
D.	Tetrasomic
Answer» E.

Discussion

386.	Ban- body is found in:
A.	Male somatic cells
B.	Male germinal cells
C.	Female somatic cells
D.	Female germinal cells
Answer» D. Female germinal cells

Discussion

387.	Striated or voluntary muscle fibres are found in:
A.	Lungs
B.	Leg muscles
C.	Gall bladder
D.	Blood vessels
Answer» C. Gall bladder

Discussion

388.	The term 4 vitamin was given by: (JIPMER 2005)
A.	Starling
B.	James Lind
C.	Drummond
D.	Casimir Funk
Answer» E.

Discussion

389.	Transgenic plants are the ones:
A.	produced by a somatic embryo in artificial medium.
B.	generated by introducing foreign DNA in to a cell and regenerating a plant from that cell.
C.	produced after protoplast fusion in artificial medium.
D.	grown in artificial medium after hybridization in the field.
Answer» C. produced after protoplast fusion in artificial medium.

Discussion

390.	The tissue culture technique used to grow nonviable inter-specific hybrids is:
A.	Androgenic haploids
B.	Shoot tip culture
C.	Somatic embryogenesis
D.	Embryo rescue
Answer» E.

Discussion

391.	The sense of balance is maintained with the help of:
A.	Hammer
B.	Stirrup
C.	Semicircular canals
D.	Cochlea
Answer» D. Cochlea

Discussion

392.	Which of the following correctly traces the energy of sound waves into the ear
A.	Auditory canal-eardrum-ear bones-cochlea
B.	Eardrum-auditory canal-cochlea-ear bones
C.	Auditory canal-ear bones-eardrum-cochlea
D.	Eardrum-auditory canal-ear bones-cochlea
Answer» B. Eardrum-auditory canal-cochlea-ear bones

Discussion

393.	Feulgen reaction a technique has been developed by Feulgen and Rossenbeck to study or to stain [BHU 1983; AFMC 1983]
A.	Proteins
B.	Lipids
C.	DNA
D.	RNA
Answer» D. RNA

Discussion

394.	One of the following in an insectivorous plant [BHU 1988; CPMT 1990; AFMC 1996]
A.	Balanophora
B.	Orobanche
C.	Rafflesia
D.	Drosera
Answer» E.

Discussion

395.	Root cap regenerates or produced from [JIPMER 1985; RPMT 1987, 88, 89]
A.	Calyptrogen
B.	Pleurome
C.	Periblem and histone
D.	Dermatogen
Answer» B. Pleurome

Discussion

396.	Read the assertion and reason carefully: Assertion : Bud may form leaves and flowers. Reason : Bud is a condensed shoot.
A.	If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B.	If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C.	If the assertion is true but the reason is false
D.	If both the assertion and reason are false
E.	If the assertion is false but reason is true
Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Discussion

397.	Haversian canals of long bones have [CPMT 1984]
A.	One vein and one artery
B.	One nerve and one lymphatic
C.	Some bone cells, fat and areolar tissue
D.	All the above
Answer» E.

Discussion

398.	One child is haemophilic (sex-linked trait), while its fraternal twin brother is normal. Which one of the following informations is most appropriate?
A.	The mother must have been heterozygous.
B.	The child is a monozygotic twin.
C.	The other child is a female and the father is haemophilic.
D.	The haemophilic child is a male.
Answer» B. The child is a monozygotic twin.

Discussion

399.	The law of segregation of characters is also. called the law of purity of gametes because:
A.	gametes have only one of the two alleles for each character.
B.	gametes cannot be contaminated.
C.	Both [a] and [b]
D.	gametes are very different type of cells.
Answer» B. gametes cannot be contaminated.

Discussion

400.	Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring were analysed. Which of the following statements about this situation is correct?
A.	Both parents are homozygotes.
B.	The offspring are either all homozygotes or all heterozygotes.
C.	The offspring represent the \[{{F}_{1}}\] generation and the gametes produced by the offspring will carry only one allele for this gene.
D.	All of the above
Answer» E.

Discussion

Explore topic-wise MCQs in NEET.

In stem which layer forms epidermal tissues

Mineral present in red pigment of vertebrate blood is [CBSE PMT 1989]

The best supporting fact that "Viruses are living'' is that viruses [NCERT 1978]

Which of these is the best source of vitamin A?

What is incorrect for bryophytes [RPMT 1997]

Viscum is [BHU 1985; AFMC 2004]

Assertion : Bacteria do not always move with the help of flagella. Reason : Flagellated bacteria employs rotary motion of flagellum when it moves.

Assertion : The peristome is a fringe of teeth-like projections found at the mouth of the capsule. Reason : It may be of two types nematodontous and orthodontus.

The use of nicotine causes

Venter is the part of [CPMT 1989; JIPMER 1985]

Which plant will lose its economic value, if its fruits are produced by induced parthenocarpy?

Match column-I with column- II and select th correct answer using the codes given below. Column-I Column-II A. Ovary I. Groundnut, mustard B. Ovule II. Guava, orange, mango C. Wall of ovary III. Pericarp D. Fleshy fruits IV. Seed E. Dry fruits V. Fruit

A family has five girls and no son. Probability of son as the 6th child will be [AFMC 1983, 84, 2000; CPMT 2005]

Oblique ovary is found in family [DPMT 2004]

? Primary growth of a tree

The accompanying diagram shows the uterine tubes of four women (P, Q, R and S). In which of two women, fertilisation is impossible at present?

If R. Q. is less than 1.0 in a respiratory metabolism, it would mean that:

Which organism is used to obtain the single cell protein [AMU 2005]

An infection would most likely increase phagocytic activity in:

Which of the following is a viral disease of poultry birds?

Of the world's top five crops in terms of annual production, which of the following statement is correct?

Bacteria are made up of [Bihar MDAT 1995]

In ATP high energy bond is present [CPMT 2005]

The sun loving plants are referred to as:

Which of the following communities is more vulnerable to invasion by outside animals and plants?

A weed belonging to family Asteraceae which has spread in all parts of India is [AIIMS 1992; MP PMT 1992]

The gametophyte of fem bears:

A small, isolated population:

What is competitive exclusion?

In aquatic system, actively moving animal organisms are:

Bipolar nerve cells are present in:

Root pressure is higher when:

The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?

Which of the following chromosome arrangement is symbolised by 2n + 2?

Ban- body is found in:

Striated or voluntary muscle fibres are found in:

The term 4 vitamin was given by: (JIPMER 2005)

Transgenic plants are the ones:

The tissue culture technique used to grow nonviable inter-specific hybrids is:

The sense of balance is maintained with the help of:

Which of the following correctly traces the energy of sound waves into the ear

Feulgen reaction a technique has been developed by Feulgen and Rossenbeck to study or to stain [BHU 1983; AFMC 1983]

One of the following in an insectivorous plant [BHU 1988; CPMT 1990; AFMC 1996]

Root cap regenerates or produced from [JIPMER 1985; RPMT 1987, 88, 89]

Read the assertion and reason carefully: Assertion : Bud may form leaves and flowers. Reason : Bud is a condensed shoot.

Haversian canals of long bones have [CPMT 1984]

One child is haemophilic (sex-linked trait), while its fraternal twin brother is normal. Which one of the following informations is most appropriate?

The law of segregation of characters is also. called the law of purity of gametes because:

Two organisms that are true-breeding for a certain genetic characteristic are mated and their offspring were analysed. Which of the following statements about this situation is correct?