### Chapter Chosen

Biodiversity and Conservation

### Book Store

Currently only available for.
CBSE Gujarat Board Haryana Board

### Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Consider the following four statement (A-D) about certain  desert animals such as kangaroo rat
A) they have a dark colour and high rate of reproduction and excrete solid urine.
B) they do not drink water, breathe at a slow rate of conserve water and have their body covered with thick hairs.
C) they feed on dry seeds and do not require drinking water.
D) they excrete very concentrated urine and do not use water to regulate body temperature.
Which two of above statement for such animals are true?

• C and D

• B and C

• C and A

• A and B

A.

C and D

Kangaroo rat is a desert rodent. Its body is covered by hairs. Its urine is more than 20 times concentrated as its plasma. This concentrated waste enables it to live in a dry or desert environment where little water is available for him to drink. Most of its water is metabolically produced from the oxidation of carbohydrates, fats and proteins in the seeds that it eats. The animals remain in a cool burrow during day time and the respiratory moisture condensed in nasal passages.

Kangaroo rat is a desert rodent. Its body is covered by hairs. Its urine is more than 20 times concentrated as its plasma. This concentrated waste enables it to live in a dry or desert environment where little water is available for him to drink. Most of its water is metabolically produced from the oxidation of carbohydrates, fats and proteins in the seeds that it eats. The animals remain in a cool burrow during day time and the respiratory moisture condensed in nasal passages.

433 Views . 3 Shares

The number of national parks in India is :
• 56
• 66
• 90
• 448

C.

90
1323 Views . 4 Shares

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :
• 1.5 million
• 15 million
• 150 million
• 1500 million

A.

1.5 million
1066 Views . 5 Shares

What are the species confined to a region and not found anywhere else called?
• Endangered
• extinct
• Sacred
• Endemic

D.

Endemic
916 Views . 9 Shares

Animals constitute what % of the total species of organisms (plants and animals) recorded so far ?
• 7%
• 70%
• 17%
• 8%

B.

70%
781 Views . 7 Shares

Number of Biosphere reserves in India is :
• 143
• 90
• 180
• 448

B.

90
987 Views . 9 Shares

Do a good deed today
Refer a friend to Zigya