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.

951.

What is called cushion of fatty tissue in female external genitalia ?

A. Mons pubi
B. Labia majora
C. Labia minora
D. Clitoris
Answer» B. Labia majora
952.

What is called a tiny finger like structure which lies at the upper junction of the two labia minora.

A. Peni
B. Clitoris
C. Mons
D. Pubis
Answer» C. Mons
953.

In spermatogenesis which cells are produced at the end of the maturation phase ?

A. Primary spermatocyte
B. Spermatogonia
C. Secondary spermatocyte
D. Spermatids
Answer» E.
954.

Which reason is responsible for extinction of host fish and parasites.

A. co-extinction
B. Alien species invasions
C. over exploitation
D. loss of habitat
Answer» B. Alien species invasions
955.

In spermatogenesis which cells are produce at the end of multiplication phase ?

A. Primary spermatocyte
B. Spermatogonia
C. Secondary spermatocyte
D. Spermatids
Answer» C. Secondary spermatocyte
956.

Name the process involve in multiplication phase of spermatogenesis ?

A. Mitotic
B. Meiosis
C. Amitosis
D. (a) and (b) both
Answer» B. Meiosis
957.

In spermatogenesis which processes occur for secondary spermatocyte ?

A. Mitotic
B. Meiosis
C. Amitosis
D. (a) and (b) both
Answer» C. Amitosis
958.

What is called the process of gamete formation in the sexually reproducing animals

A. Spermatogenesi
B. oogenesis
C. Gametogenesis
D. None of this
Answer» D. None of this
959.

Which enzyme is produced by acrosome ?

A. Testosterone
B. Hyaluronidase
C. FSH
D. LH
Answer» C. FSH
960.

The metamorphosis of the spermatids in to the sperms is known as.......

A. Multiplication phase
B. The growth phase
C. The maturation phase
D. Spermiogenesis
Answer» E.
961.

Which one is odd for India ?

A. 7th rank in agriculture species.
B. origin place of 166 species of crop plants.
C. Primary centre for domestication of ginger, turmeric, citrus, cardamom.
D. It contains 12 mega biodiversity region.
Answer» B. origin place of 166 species of crop plants.
962.

Which rock species of Western Ghat is extinct due to quarrying?

A. Tectona and Terminalia
B. Bamboo and Boswelia
C. Bignonia and Habanera
D. Madhuea and Acacia
Answer» C. Bignonia and Habanera
963.

Among the recently extinct animal, Guagga is of which country ?

A. Mammals-472
B. Reptile-42
C. Birds-1300
D. piceis-3000
Answer» B. Reptile-42
964.

Which one is odd for Amzon rain forest ?

A. Africa
B. Russia
C. Mauritius
D. Java
Answer» E.
965.

Which organisation is active for conservation of biodiversity at world level ?

A. WWF
B. WCU
C. a and b both
D. EE
Answer» D. EE
966.

Which statements are true.

A. 1, 2, 4
B. 3, 5, 2
C. 1, 3, 4, 5
D. 1, 2, 5
Answer» E.
967.

For which animal sunderbans is declared as a National Park ?

A. Lion
B. Rhino
C. Tiger
D. Wild ass
Answer» D. Wild ass
968.

What is Ecosystem diversity ?

A. similarity of species diversity in Ecosystem
B. Variation in species diversity in Ecosystem
C. Mutation in species diversity in Ecosystem
D. Homozygosity in species diversity in Ecosystem
Answer» C. Mutation in species diversity in Ecosystem
969.

Which regions are included in Biodiversity Hot-spot ?

A. Sanctuary
B. National park
C. Only Hotspot
D. all the given
Answer» B. National park
970.

Which of the following structure is not included in blood cells

A. Fibrinogen
B. Lymphocytes
C. Basophils
D. Erythrocytes
Answer» B. Lymphocytes
971.

Which one is the correct pair ?

A. Bali Tiger – Endangered specie
B. Caspian Tiger – Extinct species
C. Javan Tiger – Rare species
D. all the given.
Answer» C. Javan Tiger – Rare species
972.

Which connective tissue is found in epiglottis :-

A. Yellow elastic cartilage
B. Calcified cartilage
C. Areolar tissue
D. White fibrous tissue
Answer» B. Calcified cartilage
973.

Which is metabolic waste product of blood :-

A. Fibrinogen
B. carbon dioxide
C. Lysine
D. Immunoglobulin
Answer» C. Lysine
974.

How can the biodiversity can be conserved ?

A. By maintenance of different species
B. By maintenance of genes of different species.
C. By maintenance of different Ecosystem
D. all of the given
Answer» E.
975.

In which of the following yellow elastic cartilage is observed :-

A. Tip of nose
B. Ear pinna
C. Epiglottis
D. all above
Answer» E.
976.

Matrix of bone is composed of protein called

A. Myosin
B. Ossein
C. Elastin
D. Actin
Answer» C. Elastin
977.

What is the number of RBCs per cubic mililiter blood of adult made under normal condition .

A. 41,00,000 to 60,00,000
B. 7.5  3.5 x 103
C. 39 to 55 x 1010
D. 39,00,000 to 55,00,000
Answer» B. 7.5  3.5 x 103
978.

A Structure having blood vessels in hyaline cartilage is :-

A. Matrix
B. Perichondrium
C. Lacunae
D. Chondroblasts
Answer» C. Lacunae
979.

In the diagram of the section of bone tissue given below, certain parts have been indicated by alphabets, choose the answer in which these alphabets have been correctly matched with the parts which they indicate.

A. A = Interstitial lamellae, B = Laemaellae with osteocytes, C = Blood vessels, D = Nerve, E = Canaliculi, F = Naversian canal, G = Lamellae
B. A = Interstitial lamellae, B = Haversian system, C = Concentric lamellae, D = Cacune with bone cells, E = Matrix, F = Haversian canal, G = Canaliculi
C. A = Interstitial lamellae, B = Osteocytes, C = Nerve, D = Blood vessels, E = Canaliculi, F = Haversian system, G = Lamellae
D. A = Interstitial lamellae, B = Osteocytes, C = Nerve, D = Blood vessles, E = Lamellae, F = Haversian canal, G = Canaliculi
Answer» E.
980.

Which of the following characteristics observed in yellow elastic cartilage :

A. It has elastin
B. Its matrix is homogeneous and translucent
C. A few flat and elongated fibroblast cells lay between the fibre bundles.
D. Cell are ovoid in shape and are surrounded by matrix.
Answer» B. Its matrix is homogeneous and translucent
981.

In the centre of bone there is a narrow cavity it contains a tissue which :-

A. is composed of adipose
B. is yellow in colour
C. Possess blood vessels
D. all above
Answer» E.
982.

Which structure of blood is nucleated?

A. Erythrocyte
B. Leucocytes
C. Bloood platlets
D. Above all
Answer» C. Bloood platlets
983.

In the following diagram the thin filament is made up of.

A. Only myosin
B. Actin, tropomyosin, troponin
C. H-line, troponin
D. Myosin, actin and tropomyosin
Answer» E.
984.

Which of the following is correct for (1), (2) and (3) in the given diagram ?

A. (1) Lecunae (2) Chondrin Matrix (3) Chondrocytes
B. (1) Chondrocytes (2) Lecunae (3) Chondrin Matrix
C. (1) Chondrocytes (2) Lecunae (3) Chondrin Matrix
D. (1) Chondrin matrix (2) Chondrocytes (3) Lecunae
Answer» D. (1) Chondrin matrix (2) Chondrocytes (3) Lecunae
985.

Write location of the following diagram.

A. Gall blader
B. Lungs
C. Thyroid gland
D. Uterine tube
Answer» E.
986.

Which of the following is correct for (1), (2), (3) and (4) in the given diagram ?

A. (1) Matrix (2) Chondrocyte (3) Lacunae (4) Collagen fibre
B. (1) Lacunae (2) Matrix (3) Collagen fibre (4) Chondrocyte
C. (1) Chondrocyte (2) Matrix (3) Collagen fibre (4) Lacunae
D. (1) Collangen fibre (2) Lacunae (3) Chondrocyte (4) Matrix
Answer» E.
987.

Which tissue indicated by given diagram ?

A. Calcified cartilage
B. Hyaline cartilage
C. White fibre cartilage
D. Yellow elastic cartilage
Answer» E.
988.

Which of the following is correct for (1), (2), (3) in the given diagram ?

A. (1) Sarcoplasm (2) Sarcolema (3) Nucleus
B. (1) Nucleus (2) Sarcoplasma (3) Sarcolema
C. (1) Sarcolema (2) Nucleus (3) Sacroplasm
D. (1) Sarcoplasm (2) Sarcolema (3) Nucleus
Answer» B. (1) Nucleus (2) Sarcoplasma (3) Sarcolema
989.

Which option is incorrect for the centriole function in spermiogenesis ?

A. The two centrioles of the spermatids
B. The antrior one is known as proximal centriole
C. One is known as distal centriole
D. The distal centriole changes into the tail.
Answer» E.
990.

The signals for parturition originate from ______ .

A. Fully developed foetu
B. placenta
C. Uterus
D. (a) & (b) both
Answer» E.
991.

The fertilized ovum during the first 12 weeks is called _______.

A. Embryo
B. Foetus
C. Blastocyte
D. (a) & (b) both
Answer» B. Foetus
992.

Function of the placenta is ...

A. to deliver nutrients to embryo
B. to deliver oxygen to embryo
C. remove wastes from the embryonic blood
D. all of these
Answer» E.
993.

How much blood is lost during menstrual cycle period ?

A. 25 to 100 ML
B. 50 to 150 ML
C. 75 to 175 ML
D. 20 to 75 ML
Answer» E.
994.

In humans after implantation what is the elaborate projection developed from trophoblast called ?

A. Embryonic Layer
B. Chorionic vili
C. Placenta
D. Umbilical cord
Answer» C. Placenta
995.

Which pair is not correct ?

A. teste - scrotalsac
B. ovary - upper pelvic cavity
C. vas deferens - ejaculatory duct
D. Fallopion tube - Ovulation
Answer» E.
996.

Which option shows correct chronology of cell production during spermatogenesis ?

A. Germinal epithelium --> Spermatogonium --> Primary Spermatocyte --> Secondary Spermatocyte -->Spermatids.
B. Germinal epithelium --> Spermatids --> Spermatogonium --> Primary Spermatocyte--> Secondary Spermatocyte
C. Germinal epithelium --> Primary Spermatocyte --> Secondary Spermatocyte--> Spermatogonium --> Spermatids.
D. Germinal epithelium --> Primary Spermatocyte --> Spermatogonium--> Secondary Spermatocyte--> Spermatids.
Answer» B. Germinal epithelium --> Spermatids --> Spermatogonium --> Primary Spermatocyte--> Secondary Spermatocyte
997.

During delivery which glands send signals for the release of oxytocin ?

A. Posterior Pituitary
B. Anterior Pituitary
C. Hypothalamus
D. None of this
Answer» B. Anterior Pituitary
998.

Which part present between placenta and embryo ?

A. Umbilical cord
B. Amniotic cavity
C. Embryonic disc
D. (b) & (c) both
Answer» B. Amniotic cavity
999.

In humans embryonic development chorionicvilli which co-operate with the tissue of the mothers uterus to forms ...

A. Placenta
B. Umbilical cord
C. Amniotic cavity
D. Embryonic disc
Answer» B. Umbilical cord
1000.

Which is incorrect for sexual dimorphism of male ?

A. Mammary gland is namesake only
B. Voice is shrill
C. Muscle are strong
D. Beard and mustache develops
Answer» C. Muscle are strong