Question

2. Which type of reproduction involves of union of gametes?

A. Asexual

B. Fragmentation C. Pollination

D. Sexual reproduction

____ 3. Which of the following is a natural vegetative reproduction?

A. Bulbs

B. Cutting

C. Grafting

D. Layering

____4. Which parts of the flower is directly involved in sexual reproduction?

A. Petals and pollen grains

C. pistil and stamen

B. Pistil and petals

D. stamen and sepals


____ 1. Which of the following refers to the process by which new organisms are produced

from a parent organism?


A. Excretion

B. Precipitation

C. Respiration

D. Reproduction
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Answer 1

Answer:

Draw flowcharts for the following:

1. To accept the length of two line segments and check whether they are equal

or unequal. Display the message accordingly.

2. To enter two angles and check whether they are complementary or not.

3. To enter the age of a person and check whether he/she is eligible to vote or

not.

4. To accept the age of a student and check whether he/she is a teenager or not.

Answer 2

Required Answer:-

2. Which type of reproduction involves of union of gametes?

• ${\underline {\boxed {\Large {\bf \gray { D) \: Sexual \: reproduction } }}}}$

Explanation :

$\longmapsto$ Sexual reproduction is mode of reproduction involves fusion of two types of sex cells (gametes).

☛ Two sexes are involved to produce a new individual which is not identical to either of the parents. It has features of both the parents.

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3. Which of the following is a natural vegetative reproduction?

• ${\underline {\boxed {\Large {\bf \gray { A) \: Bulbs } }}}}$

Explanation :

$\longmapsto$ Bud is a natural vegetative reproduction reproduction as because if we observe in an onion (example), there is a terminal bud at the centre. There are fleshy scale leaves that store food surround the bud.

☛ And in growing season, new shoots arise from the bud. Hence, Bud is a natural vegetative reproduction.

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4. Which parts of the flower is directly involved in sexual reproduction ?

• ${\underline {\boxed {\Large {\bf \gray { C) \: Pistil \: and \: Stamen } }}}}$

Pistil :

• Pistil is the female part of the flower.

• Pistil has three parts, the style, ovary & stigma.

• It has tube like structure called as style.

• The style is in oval shape at the base, which is called as ovary.

• The tip of the style is sticky which is called as stigma.

Stamen :

• Stamen is the male reproductive part of the flower.

• Stamen has two parts the anther and filament.

• It has a long filament with long sac-like shape at its tip, which is called as anther.

• Anther holds the pollen sacs, where pollen grains are found.

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1. Which of the following refers to the process by which new organisms are produced from a parent organism?

• ${\underline {\boxed {\Large {\bf \gray { D) \: Reproduction } }}}}$

Explanation :

$\longmapsto$ Reproduction is the process of producing new individuals from the parents.

Reproduction are of two modes :

• Asexual reproduction

• Sexual reproduction

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