Organ Systems

Q. A group of organs that work together to perform common body functions is called

1. Organ system
2. Tissue
3. Organ
4. Cell

Q. What would be the number of chromosome in the spermatids?

Q. The given figure shows a sectional view of a seminiferous tubule. Identify the parts labelled as A, B, C, D and E.

1. A- Spermatogonium, B- Sertoli cells, C- Primary spermatocyte, D- Secondary spermatocyte, E- Spermatozoa
2. A- Sertoli cells, B- Spermatogonium, C- Primary spermatocyte, D -Secondary spermatocyte, E- Spermatozoa
3. A- Sertoli cells, B- Spermatogonium, C- Primary spermatocyte, D- Secondary spermatocyte, E- Spermatids
4. A - Sertoli cells, B-Spermatozoa, C- Secondary spermatocyte, D -Primary spermatocyte, E - Spermatids

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

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

Q. Thermoregulation is energetically expensive for many organisms particularly

1. Shrews
2. Small animals
3. Humming birds
4. All of the above

Q. Transformation of spermatids into spermatozoa is called___A____. The release of sperm from the seminiferous tubules is known as__B_____

1. A: spermiation, B: spermatogenesis
2. A: spermiogenesis, B: spermatogenesis
3. A: spermatogenesis, B: spermiation
4. A: spermiogenesis, B: spermiation

Q.

What is pseudocoelom? Where is it located?

Q. Spots on exine where sporopollenin is absent is called

1. Germ pore
2. Vegetative pore
3. Sex pore
4. Generative pore

Q. Pick the odd one out with reference to the ploidy level of the cells.

1. Sperms
2. Spermatogonia
3. Spermatids
4. Spermatozoa

Q. Fill in the blanks:

a. Simple organisms like sponges and coelenterates circulate …1…from their surroundings through their body cavities of facilitate the cells to exchange of $O_2,C{O}_2$, nutrients and waste products.

b. More complex organisms used special fluids within their bodies to transport such materials. The ...2... is most commonly used body fluid by most of the higher organisms including humans for this purpose.

c. Another body fluid ...3... also helps in the transport of certain substances.

A. 1-lymph, 2-water, 3-blood

B. 3-lymph, 1-water, 2-blood

C. 2-lymph, 3-water, 1-blood

D. 2-lymph, 1-water, 3-blood

Q.

What are the 5 important features of chondrichthyes?

Q. Which among the following is haploid in nature?

1. Spermatogenic cell
2. Spermatogonia
3. Primary spermatocytes
4. Secondary spermatocytes

Q. Which among the following options is correct with respect to spermiogenesis and spermiation?

1. Spermiogenesis - release of spermatozoa from Sertoli cells;
   spermiation - formation of spermatozoa.
2. Spermiogenesis - formation of spermatozoa; spermiation - formation of spermatids.
3. Spermiogenesis - formation of spermatids; spermiation- formation of spermatozoa.
4. Spermiogenesis - formation of spermatozoa; spermiation - release of spermatozoa from Sertoli cells into the cavity of seminiferous tubules.

Q. True coelom is the space lying between the alimentary canal and body wall enclosed by the layers of:

1. Ectoderm on both sides
2. Mesoderm on one side and ectoderm on the other
3. Endoderm on one side and ectoderm on the other
4. Mesoderm on both sides

Q. Match the correct explanation of the terms.

1. Release of sperm finally into the cavity of seminiferous tubules	A.Spermatogenesis
2. Transformation of spermatids into spermatozoa	B. Spermiation
3. Process of formation of sperm in seminiferous tubules of the testis	C. Spermiogenesis

1. 1-A, 2-B, 3-C
2. 1-C, 2-B, 3-A
3. 1-B, 2-C, 3-A
4. 1-B, 2-A, 3-C

Q. Identify the following parts of the leg of a Cockroach.

1. A - Coxa; B - Tibia; C - Trochanter; D - Femur; E - Tarsus
2. A - Coxa; B - Tarsus; C - Trochanter; D - Femur; E - Tibia
3. A - Coxa; B - Tibia; C - Tarsus; D - Femur; E - Trochanter
4. A - Coxa; B - Trochanter ; C - Femur; D - Tibia; E - Tarsus

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

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

Q. A group of organs that work together to perform common body functions is called

1. Cell
2. Tissue
3. Organ
4. Organ system

Q. Which of the following options correctly depicts the stages in correct order leading to the formation of sperms in mammalian testes?

1. Spermatogonia → Spermatid → Spermatocyte → Sperms
2. Spermatocyte → Spermatogonia → Spermatid → Sperms
3. Spermatogonia → Spermatocyte → Spermatid → Sperms
4. Spermatid → Spermatocyte → Spermatogonia → Sperms

Q. A group of organs that work together to perform a certain function is called a/an

1. Organ system
2. Tissues
3. Organs
4. Cell

Q.

Cortex and medulla are the two regions of ____?

Q. Which of the following is true for Spermatogenesis?

1. Spermatocytogenesis + Spermiogenesis
2. Spermatocytogenesis + Spermiation
3. Spermiogenesis + Spermiation
4. None of the above

Q. Most favourable land adaptation in reptiles is

1. lungs.
2. scales.
3. moist skin.
4. pentadactyl limbs.

Q. Select the correct sequence of cell stages during sperm formation.

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

Q. The internal buds produced by Spongilla are known as

1. Spores
2. gemmae
3. Gemmules
4. aplanospore

Q. A group of organs that work together to perform common body functions is called

1. Cell
2. Tissue
3. Organ
4. Organ system

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

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

Q. Which of the following involves no cell division?

1. Spermatogenesis
2. Oogenesis
3. Embryogenesis
4. Spermiogenesis

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

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

Q.

Define lymph nodes.