Organ Systems

Q.

A group of cells having common origin and performing similar function is called ----------------

1. Tissue

2. Organ

3. Organ system

4. Cell aggregate

Q. The process by which sperms are released into the seminiferous tubules is called

1. capacitation
2. spermatogenesis
3. spermiation
4. spermiogenesis

Q. The spermatids are transformed into spermatozoa (sperms) by the process of:

1. spermatogenesis
2. oogenesis
3. spermiogenesis
4. spermiation

Q. Which of the following statements is incorrect?

1. Secondary spermatocytes undergo meiosis II to produce haploid spermatids.
2. Primary spermatocytes undergo mitosis to produce secondary spermatocytes.
3. One primary spermatocyte gives rise to four spermatids.
4. Primary spermatocytes are diploid cells.

Q. The lymphatic system of frog does not include

1. lymph
2. RBCs
3. spleen
4. lymph vessels

Q. Mark the correct statement(s).
i) Spermatogenesis starts at puberty.
ii) Spermatogonia are diploid.
iii) Primary spermatocytes are haploid.

1. Only ii and iii are correct.
2. i, ii and iii are correct.
3. Only i is correct.
4. Only i and ii are correct.

Q. Select the option which shows the correct sequence of spermatogenesis.

1. Spermatocytes ➜ Spermatogonia ➜ Spermatids ➜ Spermatozoa
2. Spermatocytes ➜ Spermatogonia ➜ Spermatozoa ➜ Spermatids
3. Spermatocytes ➜ Spermatids ➜ Spermatogonia ➜Spermatozoa.
4. Spermatogonia ➜ Spermatocytes ➜ Spermatids ➜ Spermatozoa

Q. Choose the correct sequence of structural organisation in animals.

1. Organs $\Rightarrow$ Organ system $\Rightarrow$ Tissues $\Rightarrow$ Cells $\Rightarrow$ Organism
2. Cells $\Rightarrow$ Tissues $\Rightarrow$ Organs $\Rightarrow$ Organ system $\Rightarrow$ Organism
3. Organism $\Rightarrow$ Tissues $\Rightarrow$ Organs $\Rightarrow$ Organ system $\Rightarrow$ Cells
4. Organism $\Rightarrow$ Cells $\Rightarrow$ Organs $\Rightarrow$ Organ system $\Rightarrow$ Tissues

Q. How many of the given statements are correct with respect to a frog?
i. They have an open circulatory sytem
ii. There is a special venous connection between the liver and intestine as well as kidneys and the lower parts of the body.
iii. The blood supplies nutrients and ${\mathrm{CO}}_2$ to all parts of the body.

1. One
2. Two
3. Three
4. None