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.

851.

Malaria- Anopheles female mosquitoDengue -_______

A. Culex
B. Ades
C. falsciparum
D. Anopheles male mosquito
Answer» C. falsciparum
852.

Anti-allergens : Ig E Colastrum : _______

A. Ig-G
B. Ig M
C. Ig-A
D. Ig-D
Answer» D. Ig-D
853.

Match the column-I & column-II

A. P - i, Q - iv, R - v, S - ii
B. P - i, Q - iv, R - ii, S - v
C. P - i, Q - iv, R - ii, S - iii
D. P - i, Q - iii, R - ii, S - iv
Answer» D. P - i, Q - iii, R - ii, S - iv
854.

A - Macrophage act as a factory of HIVR - Macrophage continuosly produces molecules of HIV

A. A & R both are right but R is not explanation of A.
B. A & R both are right & R is explanation of A.
C. A is Right & R is Wrong.
D. A & R both are Wrong.
Answer» C. A is Right & R is Wrong.
855.

Interferon : cytokine barrierAcid in stomach : __________

A. Physical Barrieer
B. Physiological Barrier
C. Cellular Barrier
D. Cytokine Barrier
Answer» C. Cellular Barrier
856.

In which country plant given in diagram appear ?

A. South America
B. Uganda
C. Africa
D. India
Answer» B. Uganda
857.

Which one is correct for X & Y.

A. X & Y both are right & Y is the correct explanation of X.
B. X & Y both are right & Y is not correct explanation of X.
C. X is wrong & Y is right.
D. Y is wrong & X is right.
Answer» D. Y is wrong & X is right.
858.

Which one is right for given sentence X, Y & Z ?

A. X is wrong & Y & Z are right.
B. X, Y & Z all are Right.
C. X & Z are Right & Y is Wrong.
D. X & Y are Right & Z is Wrong.
Answer» D. X & Y are Right & Z is Wrong.
859.

Select correct opption for the given statements.

A. Statement X, Y & Z all are wrong.
B. Statement X & Y are wrong but Z is Right.
C. Statement X & Z are wrong but Y is Right.
D. Statement X, Y & Z are Right.
Answer» E.
860.

Which Host is indicated by region labbled as "a", "b", "c" in the given diagram?

A. A & B Human, C - Mosquito
B. B - Human, A & C - Mosquito
C. A - Mosquito, B & C - Human
D. A - Human, B & C - Mosquito
Answer» D. A - Human, B & C - Mosquito
861.

Which one is responsible for doing disease shown in figure ?

A. Microsporum
B. Trichophyton
C. Epidermophyton
D. All of the given
Answer» E.
862.

Statement X :- If antibodies fight against antigen in immunity it’s called Humoral immune response. Statement Y :- Antibodies found in blood.

A. Statement X & Y both are Right & Y is the reason of X.
B. Statement X & Y both are Right & Y is not correct explanation of X.
C. X is Right & Y is Wrong.
D. X & Y both are Wrong.
Answer» B. Statement X & Y both are Right & Y is not correct explanation of X.
863.

A - The number of WBC decreases in leukemiaR - Leukemia means blood cancer

A. A & R both are Wrong
B. A & R both are Right
C. A is Wrong & R is Right
D. A is Right & R is Wrong
Answer» D. A is Right & R is Wrong
864.

A - Uncontrolled cell division means cancerR - Cancer is caused by rays of U.V.

A. A & R are Right & R is not correct explanation of A
B. A & R both are Right & R is the reason of A
C. A is Right & R is Wrong
D. A & R both are Wrong
Answer» B. A & R both are Right & R is the reason of A
865.

Give the name P, Q, R from given figure

A. P - antigen binding site Q - Light constant region R - Non-variable rigon of Heavy Chain
B. P - antigen binding site Q - Light constant region R - Variable region of Heavy Chain
C. P - disulphide bond Q - antigen binding site R - variable region of heavy chain
D. P - antigen binding site Q - antibody binding site R - sulphide bond
Answer» C. P - disulphide bond Q - antigen binding site R - variable region of heavy chain
866.

Which one is correct sentence for X, Y & Z ?

A. X, Y & Z are right.
B. X & Z are right & Y is wrong.
C. X & Y right & Z is is wrong.
D. X, Y & Z are wrong.
Answer» C. X & Y right & Z is is wrong.
867.

Which one is responsible of the disease from the given figure

A. Culex Mosquito
B. Filarial Worm
C. Anopheles Mosquito
D. Plasmodium
Answer» C. Anopheles Mosquito
868.

Give the correct sentences.

A. ii & iii
B. i & iii
C. i, ii & iii
D. i, ii, iii & iv
Answer» D. i, ii, iii & iv
869.

The life cycle of Anopheles mosquito is given in figure. So what indicates “P” from it ?

A. Gamates
B. Zygote
C. Oocyst
D. Sporozoiter
Answer» C. Oocyst
870.

Which one is Right for X & Y ?

A. X & Y both are Right & Y is correct reason of X.
B. X & Y are Right & Y is not correct reason of X.
C. X is Wrong & Y is Right.
D. X is Right & Y is Wrong
Answer» D. X is Right & Y is Wrong
871.

Which one is correct for X, Y & Z ?

A. X & Y are Right & Z is Wrong.
B. X & Z are Right & Y is Wrong.
C. Y & Z are Right & X is Wrong.
D. X & Z are Wrong & Y is Right.
Answer» C. Y & Z are Right & X is Wrong.
872.

A - Barbiturates is a synthetic drug which gives pleasure.R - By taking barbiturates the adrenalin increase in blood.

A. A & R both are right & R is not the reason of A.
B. A & R both are right & R is not the reason of A.
C. A is Right & R is Wrong.
D. A & R both are Wrong.
Answer» D. A & R both are Wrong.
873.

Which Kind of Sedative chemical is obtained from given plant ?

A. Hashish
B. Cannabinoids
C. Cocaine
D. Opium
Answer» D. Opium
874.

Which one is correct for X & Y ?

A. X & Y both are correct & Y is correct explanation of X.
B. X & Y both are Right & Y is not correct explanation of X.
C. X is Right but Y is Wrong.
D. X is Wrong but Y is Right.
Answer» D. X is Wrong but Y is Right.
875.

Which gland secrete alkaline fluid ?

A. Seminal vesicle gland
B. Prostate gland
C. Bulbourethral gland
D. (b) and (c) both
Answer» E.
876.

Where is bulbourethral gland located ?

A. Beneath the prostate
B. Lateral side of urethra
C. Over urinary bladder
D. (a) and (b) both
Answer» E.
877.

A - Human is first host of filarial wormR - Filarial worm is viviparous

A. A & R both are right & R is not reason of A.
B. A & R both are right & R is reason of A.
C. A is Right & R is Wrong.
D. A & R are Wrong.
Answer» B. A & R both are right & R is reason of A.
878.

What is provided to sperms by secretion of seminal vesicles ?

A. Nourishment
B. Activating
C. Lubricant
D. (a)and(c)both
Answer» B. Activating
879.

What is the function of bulbourethral gland secretion ?

A. Nourishes sperms
B. role in activating sperms
C. Serves as a lubricant during sexual intercourse
D. Enhancing the motility of sperms
Answer» D. Enhancing the motility of sperms
880.

The seminal vesicle are located at ?

A. Over urinary bladder
B. Base of the urinary bladder
C. Near urinary bladder
D. Besides urinary bladder
Answer» C. Near urinary bladder
881.

Which substances present in seminal vesicles is thick and yellowish secretion ?

A. Sugar
B. Vitamin-c
C. Fat
D. (a)and(b)both
Answer» E.
882.

Where is prostate gland is located ?

A. Over urinary bladder
B. Base of the urinary bladder
C. Posterior region of the urinary
D. Side of the urinary bladder
Answer» D. Side of the urinary bladder
883.

What is provided to sperm by secretion of prostate gland ?

A. Nourishe
B. Activating
C. Lubricant
D. (a)and (c) both
Answer» C. Lubricant
884.

What is proper for outbreeding.

A. Fertility of offsprings gradually decreases.
B. Collection of harmful dominant genes.
C. Animals of two different specier are interbred.
D. A superior male of any one species is mate with a female of other species.
Answer» E.
885.

What percentage of semen is produced by seminal vesicles ?

A. 50%
B. 55%
C. 60%
D. 65%
Answer» D. 65%
886.

What is the aim of embryo culture ?

A. Sub culturing.
B. Uses of 2,4-D and cytokinin.
C. Protoplast isolation.
D. Growth of plant lets from dormant seeds.
Answer» E.
887.

Internally the penis is............

A. Composed of three cylindrical mass of conective tissue bound together
B. Composed of three cylindrical mass of tissue bound together by fibrus tissue
C. Composed of three cylindrical mass of epithelium tissue bound together
D. Composed of three mass of tissue only
Answer» C. Composed of three cylindrical mass of epithelium tissue bound together
888.

What is length of fallopion tube ?

A. 10 c.m
B. 10 m.m
C. 12 c.m
D. 12 m.m
Answer» B. 10 m.m
889.

What is PH of vaginal fluid ?

A. 3.5 to 4.0
B. 3.6 to 4.1
C. 3.7 to 4.2
D. 3.8 to 4.3
Answer» B. 3.6 to 4.1
890.

When does penis get erected ?

A. If masses of tissue filled with air
B. If masses of tissue filled with blood
C. If masses of tissue filled with hormones
D. (b) and (c) occurs both
Answer» C. If masses of tissue filled with hormones
891.

The average volume of semen for each ejaculation is ......

A. 3 to 4 ml
B. 3.5 to 4.5 ml
C. 4 to 5 ml
D. 4.5 to 5.5 ml
Answer» B. 3.5 to 4.5 ml
892.

Which tissue layer covers the ovary ?

A. Columnar epithelium
B. Squamous epithelium
C. Cuboidal epithelium
D. Ciliary epithelium
Answer» D. Ciliary epithelium
893.

What is size of ovaries ?

A. 3 c.m long , 2 c.m wide , 1 c.m thick
B. 2 c.m long , 2 c.m wide , 1 c.m thick
C. 3 c.m long , 2 c.m wide , 2 c.m thick
D. 2 c.m long , 2 c.m wide , 2 c.m thick
Answer» B. 2 c.m long , 2 c.m wide , 1 c.m thick
894.

What is called a region of connective tissue deep to the tunica albuginea ?

A. Stroma
B. Follicular epithelium
C. Graffian follicles
D. Corpus luteum
Answer» B. Follicular epithelium
895.

What is PH of semen ?

A. 7.3 to 7.7
B. 7.2 to 7.6
C. 7.4 to 7.8
D. 7.5 to 7.9
Answer» C. 7.4 to 7.8
896.

Graffian follicle after ovulation produces glandular body, it is called ...

A. Graffian follicle
B. Corpus luteum
C. Mass of graffion follicle
D. both a and b
Answer» C. Mass of graffion follicle
897.

What is the structure consist of ova and their surrounding tissues in various stages of development its called ?

A. Primary follicle
B. Ovarian follicles
C. Graffian follicles
D. Corpus luteum
Answer» C. Graffian follicles
898.

Where are ovaries situated ?

A. In upper pelvic cavity
B. Below pelvic cavity
C. At one on each side of uterus
D. (a) and (c) both
Answer» E.
899.

Which cylindrical organ is located at frontal region of scrotal sacs ?

A. Epididymu
B. Vas deference
C. Penis
D. (a) and (b) both
Answer» D. (a) and (b) both
900.

Which hormones is produced by corpus luteum ?

A. Estrogen
B. Progesterone
C. Testosterone
D. (a) and (b) both
Answer» C. Testosterone