General Science Short Questions And Answers

Q. Define Reproduction?

Ans: Reproduction is a process in which organisms produce new organisms (off-springs) like themselves.

Q. How Many Parts Does A Flower Have? Write Their Names?

Ans: A flower has four parts:

1. Sepals
2. Petals
3. Stamens
4. Carpals

Q. Differentiate Between Sepals And Petals?

Ans:

Sepals:

• Sepals have a green color like a leaf.
• Sepals protect a flower from sun and rain when it is in bud form.

Petals:

• Bright color petals are present inside the sepals.
• A petal attracts insects and animals for the pollination of pollen grains.

Q. Define Stamen?

Ans: The male part of a flower is called the stamen. A stamen has two main parts, anther and filament. Anther produces pollen grains.

Q. What Is A Carpel?

Ans: The female part of a flower is called a carpel. A carpel has three prominent parts: stigma, style, and ovary. Ovules are present in the ovary.

Q. Define Pollination?

Ans: Pollination is the transfer of pollen grains from the anther to the stigma.

Q. Write The Importance Of Pollination?

Ans: The male sex cell (sperms) reaches the female sex cell (eggs) by pollination. The pollen grains are transferred from one flower to another.

Q. What Are Gametes?

Ans: Sex cells are called gametes. Male sex cells (sperms) and female sex cells (eggs) are collectively called gametes.

Q. By Which Method Are Pollen Grains Transferred?

Ans: Various methods transfer pollen grains such as wind, water, insects, and animals.

Q. Define Self Pollination?

Ans: The transfer of pollen grains from the anther of a flower to the stigma of the same flower or another flower on the same plant is called self-pollination.

Q. Define Cross Pollination?

Ans: The transfer of pollen grains from the anther of a flower to the stigma of a flower on another plant of the same kind is called cross-pollination.

Q. What Are The Characteristics Of Cross Pollination?

Ans: For cross-pollination, plants must grow flowers at the same time. Cross-pollination usually happens in plants near each other.

Q. Write Advantages Of Cross Pollination?

Ans: Cross-pollination produces stronger plants compared to self-pollination. Some flowers have special features that favor cross-pollination.

Q. Define Pollinators?

Ans: The agents of pollination are called pollinators, which include wind, water, birds, and insects.

Q. How Do Plants Reproduce?

Ans: Plants reproduce themselves in two ways:

1. Flowering plants reproduce by seeds.
2. Non-flowering plants reproduce by spores.