class 6th science Chapter 2 diversity in living world

Chapter-2

NCERT Q/Ans

Question -1

Here are two types of seeds. What differences do you find among the roots and leaf venation of their plants?

Answer -1

(a) Wheat Features

1) Monocot

2) Fibrous roots

3) Parallel venation

b)Kidnew beans

1) Dicot

2) Taproot

3.) reticulate Venation

Q-2 Names of some animals are given below Group them based on their habitats. Write the names of aquatic animals in the area marked A' and terutrial animals in the area marked 'B'. Enter the names living in both habitads in part 'C'

Horse, Dolphine, frog, sheep, crocodile.

Answer -2 

A→ Aquatic animals

(i) Dolphin

(ii) Whale

B-Terrestrial animals

(i) horse

(ii) Pigeon

(ili) sheeps

(Iv) squirrel

(V) earthworms.

C  Both A and B (amphibans)"

(ⅰ) Frog

(ii) tartoise

(Iii) crocodile

Question -3 Manu's mother mantains a kitchen garden. One day, she was digging 

out raddish from the soil. She told Manu that radish is a kind of root Examine a radish and write what type of root it is. what type of venation would you obserse in the leaves of radish plant.

Answer 

Radish has a taproot. Its laves have reticulate veration-

Question -4

Look at the image of a mountains goat and a goat found in the plains. Point out the similarities and differences between them. What are the  reasons for these difference? 

Answer 

Similarities:

1)Both are herbivorus.

2)Both have similar body structure like four legs, horns etc.

Differences:

Mountain goat.   /  Plains goat

1)It has thick fur on its body

1) It It has shorter fur on its body

2) it has muscular legs to climb on mountains.

(2) It has cylindrical shaped body

Question -5

Group the following animals into two groups based on any feature other than those discussed in the chapter-

Answer 

Flying animal / Non-Elying animal

1) Pigeon / cow

2.)  bat / tortoise

3.) cockroch / whale

4) grasshopper / fish,  Lizard.

Question -6 As the population grows and people want more comfortable lives, & forests are  bing cut down to meet various needs. How can this affect our surrounding. How dou you think you can address this challange? 

Answer 

Deforestation can led to...

1) Loss of many species of plants and animals.

2) Soil erosion.

3) Air pollutions

4) Floods and Drought

We can address this challenge by planting more and more trees. and ban on cutting trees.

Question 7 

Analyse the flow chart. What can be examples of 'A' and 'B'?

Plant

Does it have leaves 

Does it have reticulate venation  -Yes/ No 

Answer 

A (Yes ) - Mango, Tulsi, Neem, Ashokavete

B (No)  Grass, wheat, banana etc.

Question 8  Raj argues with his friend that "Gudhal (hibiscus) plant  is a shrub ? What questions can Sanjay ask for clarification?"

Answer 

Sanjay will aske following question for clarifications

1)

Does the hibiscus plant have multiple branches growing from the base?

Yes

2) How tall does the plant grow?

→ Medium sized

3) Is this plant woody?

Yes

Such planks with many branches. from base, medium length and with woody stem are called Shrub

Question 9

Based on the information in the table find out examples of these plant for each group.

Ans-

Group: Type of Seed / Type of root./ Example

Group A: Dicots/Taproot /Mango, gram banpon, bean etc

Group B : Monocot / Fibrous root / Grass, wheat. rice, onion etd

(a) What other similarity do plant of group A have?

Answer (a) plants in group A have leaves with reticulate venationi.

(b) What other similarity do plants of group B have?

Answer Plant in group B have leaves with parallel venation..

Question-10 Observe to labelled part of a duck in the picture given below. What differences do you observe in the feet of the duck compared to the other birds? Which activity would the douck be able - to perform using this part?.

Answer 

Duck :It has webbod feet .

Pigeon : It has ragular bird feet with separate toes.

Duck can perform activing like swiming, walking with wibbed feet.

Practice book Q/Ans

Part-A

What do you mean by habitat?

Answer 

The place where plants and animals live is called habitat?

2 What does biodiversity of a region mean?

Answer 

The Variety of plants and animals found in a perticular region is called biodiversity of the region.