TRUE OR FALSE. IF TRUE SHADE A IF FALSE SHADE B 1. Some viruses have beneficial

Question

TRUE OR FALSE. IF TRUE SHADE A IF FALSE SHADE B 1. Some viruses have beneficial effects 2. 3. The complete viral particle is known as a virion. Hori zontal gene transfer is th organisms other than by descent e movement of genetic material between 4. Hermaphrodites cannot self- fertilize 5. Embryonic torsion occurs in the class cephalopoda of the Phylum Mollusca. Pathenogenesis is the process by which unfertilized eggs develop into 6. (often) haploid adults. 7. Sexual reproduction produces more numerous offsprings in a short period than asexual reproduction. 8. Fragmentation is the braking of the body of an organism into several pieces some or all of which develop into complete adult 9. The nutrient in a developing plant embryo is the endosperm. 10. Bacteria form endospores in order to overcome harsh conditions. 11.Lignin is a tissue in plants that reinforces the conducting vessels to enable the plant stand firm. 12. Alexander Flaming discovered the art of vaccination. 13.Organisms that depend on organic molecules into to manufacture energy are known as autotrophs. 14. Chordates such as reptiles that incapable of regulating their body temperatures are said to be cold-blooded. 15. Human do not communicate by means of pheromones under any condition. 16. Viral diseases can be treated using modern day antibiotics 17.Tuberculosis is caused by a viral infection. 18. All plants have a tap-root. 19.All bacteria have deleterious effect.

Explanation / Answer

Question 7- The statement is false, asexual reproduction has always a higher rate of reproduction than sexual reproduction.

Question 8- This is true.

Question 10-This is also true. Endospores have hard outer layer that form within a bacterium, to avoid environmental stresses.

Question 11- This statement is false. Lignin is a polymer not a cell that can form a tissue. However, lignin accumulation in cell wall of cells helps in plant strength.

Question 12- This is also false. Edward Jenner discovered the art of vaccination. The first vaccine was for the Smallpox.

Question 13- This is not the definition of autotroph. The statement is false. Autotrophs can make organic molecules from inorganic substances. The heterotrophs cannot utilize inorganic material because they do not have tendency to use sunlight or chemical energy to make food.

Question 14- Yes, this is true. Cold blooded cannot regulate their body temperature. Therefore, they use hibernation process.

Question 15- Yes, this is true. Pheromones of Human are not so strong like plants and insects. These cannot recognize by humans.

Question 16- This is false. Antibiotics can treat only bacteria. These are prescribing in viral infection for avoiding the bacterial infection.

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