Vidaara.orgClass 10 · Mathematics
CodeVID-M10-WS
How do Organisms Reproduce? — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Reproduction is essential for the:
- A.Survival of an individual
- B.Continuation of the species
- C.Digestion of food
- D.Removal of waste
2.
Asexual reproduction involves how many parents?
- A.One
- B.Two
- C.Three
- D.Many
3.
Amoeba reproduces by:
- A.Budding
- B.Binary fission
- C.Spore formation
- D.Vegetative propagation
4.
Hydra and yeast reproduce by:
- A.Fission
- B.Budding
- C.Fragmentation
- D.Pollination
5.
Bread mould (Rhizopus) reproduces asexually by:
- A.Spore formation
- B.Budding
- C.Binary fission
- D.Regeneration
6.
Growing a potato plant from the 'eyes' of a tuber is an example of:
- A.Pollination
- B.Vegetative propagation
- C.Fertilisation
- D.Fission
7.
Sexual reproduction is important because it produces:
- A.Identical offspring
- B.Variations among offspring
- C.No offspring
- D.Only one parent
8.
The male reproductive part of a flower is the:
- A.Pistil
- B.Stamen
- C.Sepal
- D.Petal
9.
Pollen grains are produced in the ___ of a flower.
- A.Ovary
- B.Stigma
- C.Anther
- D.Sepal
10.
The transfer of pollen from anther to stigma is:
- A.Fertilisation
- B.Pollination
- C.Germination
- D.Budding
11.
After fertilisation in a flower, the ovule develops into the:
- A.Fruit
- B.Seed
- C.Petal
- D.Stamen
12.
The male gamete in humans is the:
- A.Egg
- B.Sperm
- C.Zygote
- D.Embryo
13.
In humans, fertilisation takes place in the:
- A.Uterus
- B.Ovary
- C.Oviduct
- D.Vagina
14.
The embryo receives nourishment from the mother through the:
- A.Placenta
- B.Ovary
- C.Testis
- D.Anther
15.
Methods used to prevent unwanted pregnancy are called:
- A.Contraception
- B.Pollination
- C.Regeneration
- D.Menstruation
Section B — Challenge / Olympiad (2 marks each)
6 × 2 = 12 marks
16.
Plants grown by vegetative propagation are genetically identical to the parent. A practical advantage of this for a farmer growing bananas is that:
- A.All plants reliably have the same desirable qualities
- B.Each plant is completely different
- C.The plants cannot bear fruit
- D.It needs seeds
17.
Why does sexual reproduction give a species a better chance of surviving a changing environment than asexual reproduction?
- A.It creates variation, so some offspring may cope with new conditions
- B.It is faster
- C.It needs only one parent
- D.It produces identical offspring
18.
A pollen grain landing on a stigma grows a pollen tube. The function of this tube is to:
- A.Carry the male gamete down to the ovule for fertilisation
- B.Make the flower colourful
- C.Produce nectar
- D.Form the fruit directly
19.
Both budding in Hydra and binary fission in Amoeba are asexual because in each case:
- A.A single parent produces offspring without gamete fusion
- B.Two parents are involved
- C.Gametes fuse
- D.Seeds are formed
20.
If the egg released in a human menstrual cycle is fertilised, menstruation does NOT occur that month because:
- A.The thickened uterus lining is needed to support the embryo
- B.The ovaries stop working forever
- C.The egg dissolves
- D.The placenta is removed
21.
Using a condom is recommended not only for contraception but also because it:
- A.Helps prevent sexually transmitted infections like HIV/AIDS
- B.Increases blood sugar
- C.Causes goitre
- D.Improves digestion
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Continuation of the species
- (A) One
- (B) Binary fission
- (B) Budding
- (A) Spore formation
- (B) Vegetative propagation
- (B) Variations among offspring
- (B) Stamen
- (C) Anther
- (B) Pollination
- (B) Seed
- (B) Sperm
- (C) Oviduct
- (A) Placenta
- (A) Contraception
Section B — Challenge / Olympiad (2 marks each)
- (A) All plants reliably have the same desirable qualities
- (A) It creates variation, so some offspring may cope with new conditions
- (A) Carry the male gamete down to the ovule for fertilisation
- (A) A single parent produces offspring without gamete fusion
- (A) The thickened uterus lining is needed to support the embryo
- (A) Helps prevent sexually transmitted infections like HIV/AIDS
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