MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1501. |
Dihybrid cross proves the law of AIPMT - 1992 |
| A. | segregation |
| B. | Purity of gametes |
| C. | Dominance |
| D. | Independent assortment |
| E. | cessive |
| Answer» E. cessive | |
| 1502. |
Which of the following is non - heritable? AIPMT - 1995 |
| A. | Point mutation |
| B. | Chromosomal mutation |
| C. | Gene mutation |
| D. | Somatic mutation |
| E. | cessive |
| Answer» B. Chromosomal mutation | |
| 1503. |
F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1 . It represents in case of AIPMT - 2012 |
| A. | Co - Dominance |
| B. | Dihybrid Cross |
| C. | Monohybrid cross with complete dominance |
| D. | Monohybrid cross with incomplete dominance |
| E. | cessive |
| Answer» E. cessive | |
| 1504. |
A cross between AaBB X aaBB yields a genotypic ratio of AIPMT - 1990 |
| A. | 1 AaBB : 1 aaBB |
| B. | I AaBB : 3aaBB |
| C. | 3 AaBB : 1 aaBB |
| D. | All AaBb |
| E. | cessive |
| Answer» B. I AaBB : 3aaBB | |
| 1505. |
Which one of the following conditions of the Zygotic cell would lead to the birth of a normal human female child? AIPMT - 2011 |
| A. | Two X Chromosomes |
| B. | Only One Y Chromosomes |
| C. | Only One X Chromosomes |
| D. | One X chromosome and One Y chromosome |
| E. | cessive |
| Answer» B. Only One Y Chromosomes | |
| 1506. |
Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern? |
| A. | Phenyl ketonuria |
| B. | Sickle Cellanaemia |
| C. | Haemophilia |
| D. | Thalassemia |
| E. | cessive |
| Answer» D. Thalassemia | |
| 1507. |
Test cross in plants or in Drosophilia involves crossing AIPMT - 2011 |
| A. | between two genotype with recessive trait |
| B. | between two F1 hybrids |
| C. | the F1 hybrid with a double recessive genotype |
| D. | between two genotypes with dominant traits |
| E. | cessive |
| Answer» D. between two genotypes with dominant traits | |
| 1508. |
Which one of the following conditions correctly describes the manner of determining the sex? AIPMT - 2011 |
| A. | Homozygous sex chromosomes (ZZ) determine female sex in birds |
| B. | XO type of sex chromosomes determine male sex in grasshopper |
| C. | XO condition in humans as found in Turner's syndrome, determines female sex |
| D. | Homozygous sex chromosomes (XX) produce male in Drosophila |
| E. | cessive |
| Answer» C. XO condition in humans as found in Turner's syndrome, determines female sex | |
| 1509. |
The allele which is unable to express its effect in the presence of another is called AIPMT - 1991 |
| A. | Co - dominant |
| B. | Supplementary |
| C. | Complementary |
| D. | Recessive |
| E. | cessive |
| Answer» E. cessive | |
| 1510. |
Mutations can be induced with AIPMT - 2011 |
| A. | Infra red radiations |
| B. | IAA |
| C. | Ethylene |
| D. | gamma radiations |
| E. | cessive |
| Answer» E. cessive | |
| 1511. |
Which of the following is toughest ? |
| A. | Piamater |
| B. | Arachnoid |
| C. | Dura mater |
| D. | None of the given |
| Answer» D. None of the given | |
| 1512. |
Which option show correctly matched pairs for the column I and column II ? |
| A. | (P - ii), (Q - i), (R - iv), (S - iii), (T - v) |
| B. | (P - iii), (Q - i), (R - iv), (S - ii), (T - v) |
| C. | (P - iv), (Q - i), (R - iii), (S - v), (T - ii) |
| D. | None of the given |
| Answer» D. None of the given | |
| 1513. |
Which of the following have major co-ordinating centres for sensory and motor signal |
| A. | Brain stem |
| B. | Pons |
| C. | mid brain |
| D. | Thalamus |
| Answer» E. | |
| 1514. |
Which of the following option indicates correct chronology of the meninges from cranium to CNS ? |
| A. | Dura mater Arachanoid Pia mater |
| B. | Pia mater Arachanoid Dura mater |
| C. | Pia mater Dura mater Arachanoid |
| D. | Arachanoid Dura mater Pia mater |
| Answer» B. Pia mater Arachanoid Dura mater | |
| 1515. |
spot the odd ( in terms of type of reflex) |
| A. | Secretion of saliva on seeing tasty of food |
| B. | Antiperistalsis |
| C. | Peristalsis |
| D. | Heart - beat |
| Answer» B. Antiperistalsis | |
| 1516. |
The weight of human brain is a and b neuron in it. |
| A. | a = 1000 to 1100g |
| B. | a = 1200 to 1400g b =1000 billion b = 100 billion |
| C. | a = 800 to 1000g |
| D. | a = 1200 to 1400g b = 1000 million b = 100 million |
| Answer» C. a = 800 to 1000g | |
| 1517. |
Which of the following is not related to fore brain ? |
| A. | lateral ventricle |
| B. | Inferior Collicule |
| C. | Corpus callosum |
| D. | Voluntary locomotion |
| Answer» C. Corpus callosum | |
| 1518. |
Which regions of eye is consist of dense connective tissue ? |
| A. | sclera |
| B. | Sclera and cornea |
| C. | Choroid and retina |
| D. | Retina and ciliary body |
| Answer» B. Sclera and cornea | |
| 1519. |
Which of the following is adherent to brain ? |
| A. | Arachnoid |
| B. | Pia mater |
| C. | Dura mater |
| D. | None of the given |
| Answer» C. Dura mater | |
| 1520. |
Which layer of an eye is transperant and thin |
| A. | Outer sclera |
| B. | middle - sclera |
| C. | choroid |
| D. | Retina |
| Answer» B. middle - sclera | |
| 1521. |
Which of the follwing is a thin transparent nonvasscular meninges around CNS ? |
| A. | Dura mater |
| B. | Pia mater |
| C. | Arachnoid |
| D. | Grey matter |
| Answer» D. Grey matter | |
| 1522. |
Mid brain is located between a and b ? |
| A. | a = cerebral hemisphere |
| B. | a = Hypothalamasb = Diencephalan b = midbrain |
| C. | a = Pons |
| D. | a = Diencephalon b = Medulla oblongata b = Pons |
| Answer» E. | |
| 1523. |
Limbic system along with ________ regulates sexual behaviour ? |
| A. | Hypothalamu |
| B. | Thalamus |
| C. | Cerebral cortex |
| D. | cerebrum |
| Answer» B. Thalamus | |
| 1524. |
Which of the following does not have lumen ? |
| A. | cerebrum |
| B. | cerebellar hemisphere |
| C. | Diencephalon |
| D. | Medulla |
| Answer» C. Diencephalon | |
| 1525. |
It has centres to regulate body temperature ? |
| A. | Thalamu |
| B. | Hypothalamus |
| C. | Corpora quadrigemina |
| D. | Pons |
| Answer» C. Corpora quadrigemina | |
| 1526. |
On which side of the brain corpora quadrigemina is present ? |
| A. | Dorsal |
| B. | Ventral |
| C. | Lateral |
| D. | ventro lateral |
| Answer» B. Ventral | |
| 1527. |
Which of the following option is correct for the correct matched pairs for Column I and II and |
| A. | (a - ii-i), (b - iv-g), (c - - ii- f) (d - i - h) |
| B. | (a - I - f), (b, II, i) ( c, III - g) ( d - IV - h) |
| C. | (a - I - i), (b - II- h), (C - II - f), (d - IV- g) |
| D. | None of the given |
| Answer» B. (a - I - f), (b, II, i) ( c, III - g) ( d - IV - h) | |
| 1528. |
What is the stiff edge of pinna called ? |
| A. | Tympanum |
| B. | Lobule |
| C. | Fenestra roundata |
| D. | Helix |
| Answer» E. | |
| 1529. |
Which of the following option is the correct option for the inner most meninges of CNS ? |
| A. | very Thick and tough |
| B. | Thin and vascularized |
| C. | Highly vascularized |
| D. | Thin non vascularized |
| Answer» C. Highly vascularized | |
| 1530. |
What is the function of superior colliculi of mid brain ? |
| A. | To control emotional reflex |
| B. | To control Auditory reflex |
| C. | To control visual reflex |
| D. | To control Audio visual reflex |
| Answer» D. To control Audio visual reflex | |
| 1531. |
a and b are the regions of Limbic system |
| A. | a = Thalamus b = Hypothalamus |
| B. | a = Amygdala b = thalamus |
| C. | a = Hippocampus b = Hypothalamus |
| D. | a = Amygdala b = Hippocampus |
| Answer» C. a = Hippocampus b = Hypothalamus | |
| 1532. |
Cercbral aqueduct passes through a and it opens into b ? |
| A. | a = mid brain |
| B. | a = Diencephalonb = 4th ventricle b = 3rd ventricle |
| C. | a = Medulla Oblongata |
| D. | a = cerebrum b = 4th ventricle b = Diencephalon |
| Answer» B. a = Diencephalonb = 4th ventricle b = 3rd ventricle | |
| 1533. |
Which path is followed by plants as a part of adaptation in an ecosystem where Kangaroo rat is living ? |
| A. | C3 Path |
| B. | C4 Path |
| C. | CAM Path |
| D. | TCA Path |
| Answer» D. TCA Path | |
| 1534. |
What is posterior choroid pleues ? |
| A. | Non nervous epithelial folded roof |
| B. | Non-nervous epithelial floor |
| C. | Nervous, epithelial folded roof |
| D. | Nervous, epithelial folded floor |
| Answer» B. Non-nervous epithelial floor | |
| 1535. |
Several examples of reflexes are given here, which of the given option indicates all correct examples of Conditoned reflex ? Examples (i) Prejudices (ii) Heart - beat (iii) Peristalsis (iv) dis-liking (v) Habits |
| A. | (i), (ii), (iii) |
| B. | (i), (iii) |
| C. | (i), (iv) and (v) |
| D. | (i) and (iii) |
| Answer» D. (i) and (iii) | |
| 1536. |
Which of the following option is correct for mechanism of vision |
| A. | Light - photosensitive cell - scotopsin - dissociate - signal to ganglion cell - transmission of signal to visual area |
| B. | Light - Transmission of signals of ganglion cell - photorecepative cell - transmission signals to visual area |
| C. | Light -Transmission of signals to visual degradation of scotopsin - photosensitive cells |
| D. | None of the given |
| Answer» B. Light - Transmission of signals of ganglion cell - photorecepative cell - transmission signals to visual area | |
| 1537. |
Which of the following is incorrect if ‘O’ sign is used for benificial and ‘+’ sign for harmful ? |
| A. | Penicillium <--> Gram +ve bacteria ; Penicillium: ‘+’ |
| B. | Rhizobium <---> palnt - leguminosae family : Both ‘O’ |
| C. | Tiger <--> Rabbit ; Tiger : ‘O’ |
| D. | Shank fish <---> Suckerfish ; Suckerfish ; ‘O’ |
| Answer» B. Rhizobium <---> palnt - leguminosae family : Both ‘O’ | |
| 1538. |
What is the true for the community ecology diagram ? |
| A. | Involvement of 4 individuls of a population |
| B. | Involvement of 4 population of a species |
| C. | Involvement of 4 species of a community |
| D. | Involvement of 4 speces of 4 ecosystem |
| Answer» D. Involvement of 4 speces of 4 ecosystem | |
| 1539. |
What will happen if ‘X’ which is related to this reaction is absent ? |
| A. | Deconposition, essential process like death, will stop |
| B. | Damage to ecosystem |
| C. | Begining of the food chain is not possible |
| D. | All the statements given are correct |
| Answer» E. | |
| 1540. |
In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated compared to body fluid ? |
| A. | Marine |
| B. | Esturine |
| C. | Riverine |
| D. | pond. |
| Answer» B. Esturine | |
| 1541. |
In which of the following organism water is stored in its transformed from and not water as such ? |
| A. | camel |
| B. | Uromatrix |
| C. | Spiny tailed lizard |
| D. | rat |
| Answer» B. Uromatrix | |
| 1542. |
Which is true for the following statements ? |
| A. | True False |
| B. | False True |
| C. | False False |
| D. | True True |
| Answer» E. | |
| 1543. |
In which subdivision of aquatic ecosystem thermal stratification in seen ? |
| A. | marine |
| B. | deep fresh water habitat |
| C. | marine and fresh water are |
| D. | None of these |
| Answer» C. marine and fresh water are | |
| 1544. |
What true for the following statements ? |
| A. | True True |
| B. | False True |
| C. | True False |
| D. | False False |
| Answer» B. False True | |
| 1545. |
In order to find out VITAL INDEX in Rampur Village, following information was gathered |
| A. | xyz X 100 |
| B. | z/xy =100 |
| C. | xy/z X 100 |
| D. | 100/xyz |
| Answer» B. z/xy =100 | |
| 1546. |
What is the temperature at which archeobacteria can survive ? |
| A. | 90 C |
| B. | 100 C |
| C. | 110 C |
| D. | All of these |
| Answer» E. | |
| 1547. |
Water holding capacity of land depends on ? |
| A. | Soil composition |
| B. | Grain size |
| C. | Aggregation of grain |
| D. | All of these |
| Answer» E. | |
| 1548. |
Match the column I with column II |
| A. | (1-q), (2-s), (3-p) (4-r) |
| B. | (1-s), (2-q), (3-p) (4-r) |
| C. | (1-s), (2-p), (3-q) (4-r) |
| D. | (1-p), (2-q), (3-s) (4-r) |
| Answer» B. (1-s), (2-q), (3-p) (4-r) | |
| 1549. |
Which of the following is true with reference to temperature diffrence ? |
| A. | Terrestrial Habital > Aquatic Habitat 2. Sea < Deep fresh water lakes |
| B. | Aquatic Habitat > Terrestrial Habitat 2. Sea < Deep fresh water lake |
| C. | Terrestrial Habital = Aquatic Habitat 2. Sea < Deep fresh water lake |
| D. | Terrestrial Habital < Aquatic Habital 2. Sea = Deep fresh water lake |
| Answer» B. Aquatic Habitat > Terrestrial Habitat 2. Sea < Deep fresh water lake | |
| 1550. |
In the section of lichen which layer is seen just below “ upper cortex” |
| A. | Medulla |
| B. | Algal layer |
| C. | lowercortex |
| D. | All of these |
| Answer» E. | |