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Consider the following statements regarding sporogenesis and choose the correct answer:<br>1. Gametes ape always unicellular and microscopic in size<br>2. The union of similar gametes is called fertilization<br>3. The zygote formed as a result of fertilization is called zygospore<br>4. The seed on germination gives rise to a new plant

Correct Answer: Only 1 and 4 are true

Consider the following statements regarding the origin of polyploidy and choose the correct answer:
1. The egg may be fertilized by more than one sperm
2. There may be a failure of mitosis
3. Triploids may arise as a result of fertilization of unreduced gametes
4. An autotetraploid may arise either by the doubling of chromosomes or fertilization between two different gametes

Select the four statements about Plasmodium that are true. A)Inside an infected mosquito, haploid gametes fuse, forming a diploid zygote that develops into an oocyst B) Plasmodium cells infect two specific types of cells in humans. C) Inside an infected mosquito, haploid gametes fuse, forming a haploid zygote that develops into an oocyst. D) When a mosquito bites a human with malaria, diploid Plasmodium cells enter the mosquito. E) Plasmodium cells are transferred to humans through mosquito saliva. F) The life cycle of Plasmodium involves only haploid forms. G) The complete life cycle of Plasmodium requires two hosts.

Many of the germination inhibitors may be leached out of one plant and may inhibit the growth or seed germination of a plant from another species. Plants that exhibit this kind of competitive behaviour are said to be

Consider the following for the dissolution of trade unions under the Trade Union Act, 1926. Which of the following statement(s) is/are correct?
1. When a registered Trade Union is dissolved, notice of the dissolution is signed by nine members and by the Secretary of the Trade Union.
2. The notice of dissolution must be sent within ten days to the Registrar.
3. Where the dissolution of a registered Trade Union has been registered and the rules of the Trade Union donot provide forthe distribution of funds of the Trade Union on dissolution, the registrar shall divide the funds amongst the members in such manner as may be prescribed.

Consider the following statements regarding the changes which usually occur in the ovule during the development of seed and choose the correct answer:
1. The zygote develops into a fruit
2. The seeds having copious amounts of endosperm tissue are called exalbuminous
3. The exalbuminous seeds usually store reserve food materials in cotyledons
4. The inner integument, if persists, forms the

Consider the following statements regarding the embryological evidences for evolution and choose the correct answer:
1. Algae are much advanced than mosses and ferns
2. Protonema of mosses resemble certain green algae
3. Both bryophytes and pteridophytes have ciliated sperms and require water for fertilization
4. Gymnosperms do not need water for fertilization
5. Cycads and Gingko, the primitive gymnosperms, have ciliated sperms like the pteridophytes

Consider the following statements and choose the correct answer:
1. For the development of viable seeds the double fertilization is very necessary
2. The net result of double fertilization is the formation of endosperm from the triploid nucleus
3. In Angiosperms very free nuclear divisions take place as in Gymnosperms
4. The endosperm nucleus has both maternal and paternal characters showing physiological importance like hybrid vigour

Consider the following statements and choose the correct answer:
1. A direct proportionality exists between vapour pressure and the concentration of water vapour in the atmosphere
2. Relative humidity is an expression of the ratio of the actual vapour pressure of the atmosphere when saturated at the same temperature
3. A rise or fall in temperature with no change in vapour pressure will cause a drop or rise, respectively, in relative humidity
4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity

Consider the following statements regarding poloyembryony and choose the correct answer:
1. False polyembryony includes the development of two or more embryo sacs within the Same nucellus, and the embryos are derived from different embryo sacs
2. In cleavage polyembryony, the zygote instead of giving rise to one embryo produces embryos by cleavage
3. According to Jeffrey (1895), in Erythronium americanum the "embryogenic mass" forms two or three embryos

Consider the following statements: 1. The delay time is the time required to reach 50% of the final value in the first time. 2. The rise time is the time required for the response to rise from 10% to 90% of its final value for underdamped systems. 3. The rise time is the time required for the response to rise from 0 to 100% for the underdamped systems. Which of these statements are correct?