Monday 5 January 2015

Unit No 1 (short Questions)

Question No: 1

Why butterflies and moths visit flowers one after other?

Answer

Butterflies and moths visit flowers because they collect nectar (Honey) for their food.
Science Notes
Why butterfly and moths visit flowers

Question No:2

Define fertilization.

Answer

When pollen grain the male cell of flower fuses with ovule the female cell of flower it is called fertilization.
Fertilization in Plants
Fertilization in Plants

Question No:3

Which organisms carry out pollination in plants?

Answer

Insects, Bird and many other animals carry out pollination in plants.
Pollination in Plants
Pollination in Plants

Question No:4

How seeds and fruits are dispersed?

Answer

Seeds and fruits are dispersed by following ways.
1. by Air
2. by Water
3. By Animals, Birds and men
How Seeds are dispersed?
How Seeds are dispersed?

Question No:5

Seeds dispersed by men and animal are of what kind?

Answer

Hard and small seeds or seed with rough surface and bristles on them are dispersed by men and animals.
Seeds dispersed by Humans
Seeds dispersed by Humans

Question No:6

Write down the different methods of asexual reproduction.

Answer

Following are types of a sexual reproduction.
  1. Cutting
  2. Layering
  3. Grafting 

Question No:7

How many types of reproduction are found in plants?

Answer

Two types of reproduction are found in plants.

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