CBSE Class 8 Science Worksheet
Reproduction in Animals
1.
Choose the correct answer: During sexual reproduction, the amount of DNA _________.
A)
remains same
B)
gets doubled
C)
reduced to half
D)
gets four times
2.
Fill in the blanks: The process of keeping the eggs warm in order to hatch is called _________.
3.
What is the role of the long tail in sperms?
4.
State True or False: An embryo is made up of a single cell.
A)
1
B)
0
5.
Choose the correct answer: Internal fertilization occurs __________.
A)
outside female body
B)
in female body
C)
outside male body
D)
in male body
6.
Fill in the blanks: The period between fertilization and childbirth is called ____________ period.
7.
State True or False: Mode of reproduction in hydra is asexual.
A)
1
B)
0
8.
Choose the correct answer: Cloning is a mode of _________.
A)
Sexual reproduction
B)
Asexual reproduction
C)
Both 1 and 2
D)
None of these
9.
What are test-tube babies?
10.
Choose the correct answer: The production of exact copy of an animal by asexual reproduction is ________.
A)
budding
B)
hatching
C)
cloning
D)
fission
11.
Choose the correct answer: The organism reproduce by parthenogenesis is _________.
A)
fish
B)
sheep
C)
owl
D)
honey bee
12.
Fill in the blanks: Young one of dog is called ________.
13.
Write two types of fertilization.
14.
Choose the correct answer: Young one of butterfly is _________.
A)
tadpole
B)
caterpillar
C)
larva
D)
None of these
15.
Fill in the blanks: The mode of asexual reproduction in yeast is ________.
16.
Choose the correct answer: The number of nuclei present in a zygote is __________.
A)
One
B)
Two
C)
Four
D)
None
17.
Choose the correct answer: Tadpole breathes through __________.
A)
skin
B)
lungs
C)
gills
D)
None of these
18.
Name two hermaphrodite organism.
19.
Fill in the blanks: The foetus keep developing further by taking nourishment from mother through __________.
20.
Choose the correct answer: The process of release of an egg from the ovary is called ________.
A)
ovulation
B)
lactation
C)
fertilization
D)
parthenogenesis
CBSE Class 8 Science Worksheet
Reproduction in Animals
Answers
1.
Option A
2.
incubation
3.
They help in quick movement of sperm and help them to reach the egg for fertilization.
4.
Option B
5.
Option B
6.
gestation
7.
Option A
8.
Option B
9.
Babies born through in vitro fertilization technique.
10.
Option C
11.
Option D
12.
puppy
13.
Internal fertilization and external fertilization
14.
Option B
15.
budding
16.
Option B
17.
Option C
18.
Earthworm and leech
19.
placenta
20.
Option A
