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Life Sciences Test Bank
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Life Sciences Test Bank
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25 Questions

1. Who of the following is associated with the discovery of 'Restriction endonuclease'?
2. Genes that exhibit criss-cross inheritance are
3. To which animal phyla do organisms with round bodies marked externally into rings or segments belong?
4. The source of three important narcotic drugs'bhang, ganja and hashish (charas)—is one and the same plant. Which one of the following is this plant?
5. Every multi-cellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an
6. An earthworm will move from a dry area to a moist area; this is an example of
7. Floral bud tendril can be traced in
8. The breathing is controlled by the
9. Which one of the following pairs is not correctly matched?
10. Consider the following: 1. Insulin 2. Human Growth hormone 3. Interferons 4. Hepatitis-B surface antigen Which of the above is/are generated from genetically engineered microbes?
11. Disease associated with secretion of toxin is
12. In peas, if 50% of the offspring are short, and 50% are tall, the parents were probably
13. During inhalation
14. At the time of implantation, the human embryo is called a(n)
15. Silver fish, crab, cockroach and honey bees have which of the following features common?
16. All of the following veins carry deoxygenated blood except the
17. A malignant (cancerous) tumour developing from bone, muscle or other framework tissue in the body is called a
18. Which of the following has a life span of only one day?
19. The correct sequence of steps in Koch's postulates (1-injecting the germ to produce the original disease; 2-isolating the same germ in many cases; 3-obtaining the original germ from infected animals; 4-growing the germ in pure culture) is
20. The source of oxygen in photosynthesis is
21. The family Ephedraceae, having ephedrine producing plants, belongs to
22. A plant cell is distinguished from an animal cell by the presence of
23. The passage of gases into and out of a leaf is controlled by the
24. Uncontrolled cell division in certain tissues and organs (e.g., lung, breast, bone, marrow, etc.) leads to
25. Exodermis is the

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