CBSE Class 8 Science Reproduction in Animals Assignment Set H

VERY SHORT ANSWER TYPE QUESTIONS:-

I. Tick the correct option:-

1. Internal fertilization occurs in

(a)in female body (b)outside female body

(c)in male body (d) outside male body

2. A tadpole develops into an adult by the process of

(a)fertilization (b)metamorphosis

(c)embedding (d)budding

3. The number of nuclei in the zygote is

(a)none (b)one (c)two (d)four

II. Fill in the blanks:-

1. ________ is the state of onset of sexual maturity in human beings.

2. _________ is very important for continuation of a species.

3. The_______ repeatedly divides to form an__________.

SHORT ANSWER TYPE QUESTIONS:-

1. Explain the following terms:-

(a) Reproduction

(b) Fertilization

(c) Zygote

(d) Metamorphosis

(e) Hermaphrodites

(f) Foetus

(g) Larva

(h) placenta

2. Differentiate between the following:-

(a) Reproduction & fertilization

(b) Internal & external fertilization

(c) Zygote & foetus

(d) Sperm & ovum

(e) Oviparous & viviparous animals

(f) Twins & clones

(g) Asexual & sexual reproduction

3. Give reasons for the following:-

(a) Gender of the result ing offspring is determined by the male parent in humans.

(b) Sex hormones regulate secondary sexual characters.

(c) Platypus & Echidna lay eggs but are not oviparous animals.

(d) Sperm needs to have motility.

4. Draw neat & labeled diagrams of the following:-

(a) Human male reproductive system

(b) Human female reproductive system

(c) Human sperm

LONG ANSWER TYPE QUESTIONS:-

1. Explain where the embryo stays till it is fully developed and also explain how its nutritional respiratory & excretory funct ions are carried out .

2. What is Asexual reproduct ion? What are the advantages of this method?

3. Explain the meaning of Binary Fission. Name a few organisms that reproduce like this & draw a series of diagrams to demonst rate this process in Amoeba.

4. Explain how budding occurs. Name a few organisms that reproduce like this & draw a series of diagrams to demonstrate this process in Hydra.

5. What is Metamorphosis? With the help of flow diagrams illustrate the life cycles of a Silkworm & Frog.

Click on link below to download CBSE Class 8 Science Reproduction in Animals Assignment Set H