Biology – Class 12 Mock Test 8

10%

Question 1 of 10

1. Which among the following options fall under the category of pre-reproductive age?

25-30 years

50-60 years

15-19 years

0-14 years

Question 1 of 10

Question 2 of 10

2. Which of the following is the last level of organization?

Organism

Ecosystem

Cells

Biomes

Question 2 of 10

Question 3 of 10

3. Transgenic plants carry desirable traits like _______

complementary genes

herbicide resistance

harmful genes

lactose intolerance

Question 3 of 10

Question 4 of 10

4. India alone has ______ varieties of rice.

10,000

100,000

200,000

20,000

Question 4 of 10

Question 5 of 10

5. The Siberian cranes migrate to which National Park in India?

Silent Valley National Park, Kerala

Chikla Lake Bird Sanctuary, Orissa

Kaziranga National Park, Assam

Keoladeo National Park, Rajasthan

Question 5 of 10

Question 6 of 10

6. Probes ________ with its complementary DNA.

add

hybridize

separate

stand

Question 6 of 10

Question 7 of 10

7. In 1990 the first gene therapy was given to treat which deficiency?

Protein

Vitamin E

Adenosine deaminase

Smallpox

Question 7 of 10

Question 8 of 10

8. Which of the following is responsible for an increase in population density?

Emigration is more

Age structure

Birth rate increase

Death rate increase

Question 8 of 10

Question 9 of 10

9. Transgenic mice are being developed for use in testing the safety of vaccines before they are used on ________

cattle

monkeys

humans

pigs

Question 9 of 10

Question 10 of 10

10. Low concentration of any pathogen can be detected by ______ of their nucleic acid.

cutting

denaturation

amplification

joining

Question 10 of 10