Biology Mock Test series - 6

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1. 
Which of the following is the largest single-celled organism?

2. 
What is the phenomenon called when the androecium and gynoecium of a bisexual flower mature at different times?

3. 
Which one of the following elements is present in the green pigment of leaves?

4. 
Which type of plant is a cactus classified as?

5. 
What causes red rot disease in sugarcane?

6. 
Which of the following animals has the longest gestation (pregnancy) period?

7. 
Which crop benefits from nitrogen-fixing bacteria?

8. 
Which of the following plants lacks vascular tissues for water and nutrient transport?

9. 
Which of the following chemical substances is secreted by a particular species of animal to attract another member of the same species?

10. 
Molybdenum deficiency affects the activity of-

11. 
EBOLA is a-

12. 
What happens to blood pressure if the radius of blood vessels decreases?

13. 
Which one of the following gases is released during photosynthesis?

14. 
Which of the following causes damping off of seedlings?

15. 
Which of the following controls blood pressure?

16. 
The fruit of which of the following plants is found underground?

17. 
Why can bats fly in the dark?

18. 
Which among the following is the largest phylum in the animal kingdom with respect to the number of species?

19. 
Which of the following produces aflatoxins?

20. 
How many neck canal cells are present in the archegonium of a fern?

21. 
Which one of the following crop combinations is not commonly adopted in mixed cropping in India?

22. 
Which one of the following animals belongs to the phylum Mollusca?

23. 
Which of the following is considered a living fossil of plants?

24. 
Bark of which tree is used as a condiment?

25. 
From which part of the cinchona plant is the drug extracted?

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