Explore topic-wise MCQs in Biology.

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.

551.

Which of the following is actually not a flower?

A. Shoe flower
B. Sun flower
C. Rose
D. Pea
Answer» C. Rose
552.

Zygomorphic condition can be represented as: (UP CPMT,, 2009)

A.
B. %
C. P
D. G
Answer» C. P
553.

Modified stem of _______ protect the plant from grazing animal.

A. Datura festuosa
B. Aloe vera
C. Gloriosa superba
D. Carissa carandus
Answer» E.
554.

The correct match for Branching

A. (P)-III, (Q) – IV, (R)-I, (S)-II
B. (P)-I, (Q)- IV, (R)- III, (S)- II
C. (P) - IV ,(Q) - III (R)-I, (S)-II
D. (P)-IV (Q)- III, (R)- II , (S)- I
Answer» D. (P)-IV (Q)- III, (R)- II , (S)- I
555.

Root that grow from any part of the plant body other than the radical are called? (AFMC 2010)

A. Tap root
B. Adventitious root
C. Modified roots
D. Aerial roots
Answer» C. Modified roots
556.

____require more than two growing seasons to complete their life cycle.

A. Annual
B. Perennials
C. Biennials
D. Herbs
Answer» C. Biennials
557.

Drupe has : (UGET Manipal, 2004)

A. hard Epicarp
B. hard endocarp
C. hard mesocarp
D. no epicarp
Answer» C. hard mesocarp
558.

When the stem or its branch ends into floral bus:

A. Vegetative growth starts
B. Reproductive growth starts
C. Lateral branch is given out
D. Apical growth is stimulated
Answer» C. Lateral branch is given out
559.

Which of the following pairs is not correct? (J & k, 2004)

A. Corymb - Candytuft
B. Capitulum - sunflower
C. Catkin – Mulberry
D. Raceme – Wheat
Answer» E.
560.

Which of these characters do not belong to Compositae?( CPMT,1991)

A. Ligulate ray flower
B. Basal ovules
C. Syngenesious stamens
D. Five lobed stigma
Answer» E.
561.

Individual components of Perianth are call:

A. Sepal
B. Petals
C. Tepals
D. Brackets
Answer» D. Brackets
562.

Brinjal show ______ calyx.

A. Pappu
B. Deciduous
C. Caduceus
D. Persistent
Answer» E.
563.

An inflorescence always forms a : (Punjab PMT 1997 )

A. Multiple or composite fruit
B. Simple fruit
C. Dry dehiscent fruit
D. Aggregate fruit
Answer» B. Simple fruit
564.

A pome fruit is said to be false because: (CPMT 2000)

A. The pericarp is inconspicuous
B. The endocarp is cartilaginous
C. The fruit is present in fleshy edible thalamus
D. The fruit is derived from inferior ovary
Answer» D. The fruit is derived from inferior ovary
565.

Beauty of Bougainvillea flower are: (AFMC, 1997)

A. Corolla
B. Calyx
C. Bracts
D. Androecium
Answer» D. Androecium
566.

Which of the following is a wrong pairing?

A. Raceme - Mustard
B. spike - Achyranthus
C. compound umbel - Onion
D. spadix - musa
Answer» D. spadix - musa
567.

Geocarpic fruit is : (AIPMT 2002)

A. Potato
B. Pea nut
C. Onion
D. Garlic
Answer» C. Onion
568.

Leaf morphology helps in :

A. Plant identification
B. Plant classification
C. None of these
D. (a)&(b) both
Answer» E.
569.

Which is the essential mineral element for muscle contraction ?

A. Ca++
B. Mg++
C. K+
D. Na+
Answer» B. Mg++
570.

Unifoliate leaf is found in: (BHU2002)

A. Pea
B. Citrus
C. Royal palm
D. Oil palm
Answer» C. Royal palm
571.

Parallel venation is a characteristic of :

A. Legume
B. Grasses
C. Parasitic plants
D. Xerophytic plants
Answer» C. Parasitic plants
572.

Seed is :

A. Fertilized embryo
B. Fertilized ovary
C. Fertilized fruit
D. Fertilized ovule
Answer» E.
573.

Which is essetial for transmission of messages ?

A. Adrenalin
B. Acetylcholine
C. Norqdrenalin
D. Vasopressin
Answer» C. Norqdrenalin
574.

How many bones are present in the struture of skeleton system of human ?

A. 206
B. 210
C. 308
D. 146
Answer» B. 210
575.

What is included in axial skeleton ?

A. Skull and vertebral column
B. Ribs
C. Sternum
D. a and b both
Answer» E.
576.

In which muscle amount of myoglobin is high ?

A. Red muscle
B. White muscle
C. Non-striated muscle
D. a and b both
Answer» B. White muscle
577.

What is the name of rod shaped fibrous protein ?

A. Troponin
B. Actin
C. Tropomyosin
D. Meromyosin
Answer» D. Meromyosin
578.

The study of skeleton system is called as......

A. Myology
B. Cardiology
C. Osteology
D. Histology
Answer» D. Histology
579.

Which chemical is responsible to make skeleton muscle fatigue ?

A. Lactic acid
B. Pyruvic acid
C. Ethyl alcohol
D. Acetaldehyde
Answer» B. Pyruvic acid
580.

How many bones, the skull is made of ?

A. 23
B. 22
C. 21
D. 20
Answer» C. 21
581.

By which tissue skeleton system is made up of ?

A. Epithelial tissue
B. Connective tissue
C. Nervous tissue
D. Muscle tissue
Answer» C. Nervous tissue
582.

Which are two forms of actin fiber ?

A. Monomer-G- protei
B. Polymeric H- actin
C. Polymeric F-actin
D. a and c both
Answer» E.
583.

Which is/are the type of skeleton muscle ?

A. Red muscle
B. White muscle
C. Non-striated muscle
D. a and b both
Answer» E.
584.

What is included in the structure of skull ?

A. Bones of cranium
B. Bones of face
C. Sternum
D. a and b both
Answer» E.
585.

Which chemical is envolved duribg anaerobic respiration of glycogen of muscle ?

A. Ethy alcohol
B. Lactic acid
C. Co2
D. a and c both
Answer» C. Co2
586.

Which muscle is known as an aerobic muscle ?

A. Red muscle
B. White muscle
C. Non-striated muscle
D. a and b both
Answer» B. White muscle
587.

What the is name of complex, small globular protein ?

A. Troponin
B. Tropomyosin
C. Actin
D. Meromyosin
Answer» B. Tropomyosin
588.

A root can be differentiated from the stem because of the absence of :

A. Green colour
B. Nods and internodes
C. Hair
D. Branches
Answer» C. Hair
589.

Which one of the following is not fruit?

A. Cabbage
B. Apple
C. Watermelon
D. Tomato
Answer» B. Apple
590.

Water inside a coconut is : (Manipal PMT 1995)

A. Liquid endosperm
B. Liquid endocarp
C. Liquid Mesocarp
D. Liquid Nucleus
Answer» B. Liquid endocarp
591.

Wheat grain is an example of :

A. Achene
B. Caryopsis
C. Nut
D. Follicle
Answer» C. Nut
592.

Which one of the following statements is correct? (A.I.P.M.T. 2011)

A. In tomato ,fruit is capsule
B. Seeds of orchids have oil –rich endosperm
C. Placentation in primrose is basal
D. Flower of tulip is a modified shoot.
Answer» E.
593.

Flowers are zygomorphic in : (A.I.P.M.T. 2011)

A. Mustard
B. Gulmohar
C. Tomato
D. Datura
Answer» C. Tomato
594.

______ are the vegetative organs of the flowering plants:

A. Root ,stem, flower
B. Leaves ,stem, fruits
C. Roots, leaves, flowers
D. Roots, stem, leaves
Answer» E.
595.

A characteristic of angiosperm is : (AFMC 1992,Hariyana,PMT, 1994)

A. Flower
B. Root
C. Seed
D. All of these
Answer» B. Root
596.

Which one of the following is not a characteristic of root:

A. Presence of root tap
B. Presence of unicellular hair
C. Presence of chlorophyll
D. Absence of buds
Answer» D. Absence of buds
597.

False fruit is a fruit which develops from:

A. Ovary
B. Any part of the flower except the ovary
C. Aporcarpous carpellary
D. Syncorpous carpellary
Answer» C. Aporcarpous carpellary
598.

When the trunk is unbranched and bears crown of leaves at its apex, it is known as :

A. Runner
B. Sucker
C. Caudex
D. Culm
Answer» D. Culm
599.

The seed can be defined as:

A. An immature embryo protected by coats
B. A mature ovule with a dormant embryo with enough reserve food and protective coating.
C. A mature spore with enough reserve food and protective coatings
D. A mature ovary with reserve food and protective coverings
Answer» C. A mature spore with enough reserve food and protective coatings
600.

Cymose inflorescence is present in: (A.I.P.M.T. 2012)

A. Sesbania
B. Trifolium
C. Brassica
D. Solanum
Answer» E.