Reproduction

Q.

Differentiate between menstrual cycle and oestrus cycle.

Q.

What is the importance of reproduction?

Q. What would happen if all the organisms stop the process of reproduction?

Q.

Explain the life cycle of silkworms.

Q.

Is reproduction synonymous with growth in a unicellular organism?

Q.

What happens if more than one sperm enters the egg?

Q.

Offspring formed by the asexual method of reproduction have greater similarity among themselves because

1. Asexual reproduction involves only one parent.
2. Asexual reproduction does not involve gametes.
3. Asexual reproduction occurs before sexual reproduction.
4. Asexual reproduction occurs after sexual reproduction.

1. (i) and (ii).

2. (i) and (iii).

3. (ii) and (iv).

4. (iii) and (iv).

Q.

What is viviparous germination?

Q.

What is meant by 'reproduction'? Why is it essential?

Q.

Which life process ensures that a plant or animal species will not disappear from the earth ?

Q.

Which of the following organism do not give birth to young ones?

1. Lizard

2. Human

3. Rat

4. Blue whale

Q.

How does the following organism reproduce by asexual methods?

Sugar cane

Q. Select the correct statement(s) with respect to reproduction.

1. Reproduction is the basic characteristic of living organisms.
2. Reproduction is necessary for survival of any species.
3. Asexual and sexual reproduction are the two modes of reproduction.
4. Lower organisms reproduce by sexual reproduction.

Q.

Question 11

Choose the odd one out from below with respect to reproduction.
(a) Eggs of hen.
(b) Seeds of plants.
(c) Buds of potato.
(d) Roots of mango tree.

Q.

Reproduction is not essential for an individual but to maintain the species.

1. True
2. False

Q.

What is menstruation? Why does it occur?

Q.

Which of the following is a mammal?

1. Pigeon

2. Monkey

3. Snake

4. All of the above

Q.

Choose the odd one out from below with respect to reproduction:

1. Eggs of hen

2. Seeds of plants

3. Buds of potato

4. Roots of mango tree

Q.

Question 01
Explain the importance of reproduction in organisms.

Q. The process in which organisms produce young ones of their own kind is known as reproduction.

1. False
2. True

Q.

Which of the following is/are haploid cell(s)?

1. Ovum

2. Sperm
3. Skin cell
4. Vaginal cell

Q.

Paurometabolous type metamorphosis occurs in

1. Cockroach

2. Mosquito

3. Housefly

4. Honeybee

Q. How many daughter amoeba are produced during two successive binary fissions?

1. Six
2. Eight
3. Four
4. Two

Q. Characteristics that are transmitted from parents to offsprings during sexual reproduction show :

1. Only variations with parents
2. Neither similarities nor variations with parents
3. Only similarities with parents
4. Both similarities and variations with parents

Q. Which of the following is true about the functions of placenta in animals?

1. To provide nutrition to the developing foetus.
2. To provide oxygen to the developing foetus.
3. To supply carbon dioxide to the developing foetus.
4. Removes the excretory wastes produced by the developing foetus.

Q.

Write a short note on animal reproduction.

Q. The best way to remain healthy is to ________.

1. always eat junk or fatty foods
2. eat nothing but exercise everyday
3. eat only fruits and vegetables
4. exercise and follow a balanced diet

Q. New individuals formed by asexual method of reproduction have greater similarity among themselves because:
(i) Asexual reproduction involves only one parent.
(ii) Asexual reproduction does not involve gametes.
(iii) Asexual reproduction occurs before sexual reproduction.
(iv) Asexual reproduction occurs after sexual reproduction.

1. (i) and (ii)
2. (ii) and (iv)
3. (i) and (iii)
4. (iii) and (iv)

Q.

What does asexual reproduction mean?

Q. All living beings grow, mature and die but to ensure continuity of their species they need to ___.