NEET (Zoology MCQs)
Categories: EDUCATION
Q.1. Nervous tissue is a specialized tissue of ectoderm origin and most muscles are …… specialized tissues;
(1) Endoderm origin.
(2) External germ layer origin.
(3) Mesoderm origin.
(4) Intra-Mesoderm origin.
Ans. (3) Mesoderm origin.
Q.2. Statement I: Each haemoglobin molecule can carry a maximum of four molecules of oxygen.
Statement II: The percentage of CO2 transported as carbamino-haemoglobin is equal to the percentage of lymphocytes in total WBC.
(1) Both Statement I and Statement II are correct.
(2) Both Statement I and Statement II are incorrect.
(3) Statement I is correct but Statement II is incorrect.
(4) Statement I is incorrect but Statement II is correct.
Ans. (1) Both Statement I and Statement II are correct.
Q.3. Mesoderm is present as scattered sacs in;
(1) Hydra and Ctenoplana.
(2) Filaria worms and hookworms.
(3) Magur and vultures.
(4) Bombyx and Culex.
Ans. (2) Filaria worms and hookworms.
Q.4. Choose the incorrect statement.
(1) The reproductive cycle in primates is called estrus cycle.
(2) Menstruation in human females is repeated at an average interval of about 28/29 days.
(3) Menstruation occurs due to the breakdown of the endothelial layer of the uterus.
(4) Menstruation occurs only when the released ovum is not fertilized.
Ans. (1) The reproductive cycle in primates is called estrus cycle.
Q.5. Which physiological process is facilitated by hypertonic pressure in the inner medullary interstitium?
(1) Filtration of blood in the glomerulus
(2) Secretion of waste products in the proximal convoluted tubule
(3) Reabsorption of water in the collecting ducts
(4) Active transport of ions in the distal convoluted tubule
Ans. (3) Reabsorption of water in the collecting ducts
Q.6. Choose the incorrect statement regarding secondary metabolism.
(1) Abrin and ricin are lectins.
(2) Rubber and medicines are useful for human welfare.
(3) Codeine is an alkaloid.
(4) Anthocyanins are pigments.
Ans. (1) Abrin and ricin are lectins.
Q.7. Statement I: Lactation amenorrhea is considered effective up to 24 weeks after delivery.
Statement II: ZIFT involves the transfer of a zygote or early embryo of upto 8 blastomeres into the oviduct.
(1) Both Statement I and Statement II are correct.
(2) Both Statement I and Statement II are incorrect.
(3) Statement I is correct but Statement II is incorrect.
(4) Statement I is incorrect but Statement II is correct.
Ans. (1) Both Statement I and Statement II are correct.
Q.8. Read the given statements with reference to human heart.
- The heart is spontaneously excited.
- Its functions can be controlled by nervous and hormonal mechanisms.
- The heart of man is neurogenic.
Select the option which contains only correct statements.
(1) Only A and C
(2) Only A
(3) Only B and C
(4) Only A and B
Ans. (4) Only A and B
Q.9. Select the incorrect statement.
(1) Production of body heat and production of erythrocytes are the functions of the skeletal system.
(2) The axial skeleton is aligned along the main axis of the body.
(3) The skeletal system in man is made up of 206 bones and some cartilage.
(4) Fibrous joints do not allow any movement at all.
Ans. (1) Production of body heat and production of erythrocytes are the functions of the skeletal system.
Q.10. The Roman numeral after the name of restriction enzymes indicates;
(1) The feature that distinguishes it from other enzymes.
(2) The order in which the enzymes were isolated from that strain of life.
(3) The order of the strains in that bacterium for the same enzyme.
(4) The class of enzyme to which it belongs.
Ans. (2) The order in which the enzymes were isolated from that strain of life.