Please answer all multiple choice 21. Eggs with very little yolk that is evenly

Question

Please answer all multiple choice 21. Eggs with very little yolk that is evenly distributed in the egg are called A. mesolecithal. B. holoblastic. C isolecithal. D. telolecithal. 2.2 22. The internal pouch representing the developing gut in a gastrula is called a A blastocoels. B. pseudocoelom. C. coelom. D archenteron 23. Bees may pick up pollen of one species on a certain place on their bodies, if this area does not come into contact with the receptive structures of the flowers of another plant species, the pollen is not transferred. This is an example of: A. temporal isolation B. mechanical isolation C. ecological isolation D. geographical isolation 24. Darwin's finches, and the studies by the Grants finally proved that: A. beak size adjusted within a given year depending on nutrition status differences in beak size were the result of natural selection and were inherited C beak sizes were completely random and no pattern was determined D. beak sizes made no difference as to the food being eaten 25. Which one of the following is NOT an observation of a population where natural selection is at work - A. There is variation that can be inherited in a population B. The population always becomes adapted to its environment C. Many more individuals are produced by a population than can survive and reproduce D. Adaptive characteristics in some individuals make them more likely to survive and re E.All of the choices are correct 26. Two organisms placed in the same Class in Linnaean classification scheme must be in the same: hylum b) order c) family d) genus e) level for all of the above categories

Explanation / Answer

21. C. isolecithal

22. D. archenteron

23. B. mechanical isolation

In this type of isolation, if the shape and size are not matched than fertilization is not happened. Eg. Flower that do not have correct shape for pollen, do not allow pollination and resist fertilization.

24. B. different in beak size were the result of natural selection and were inherited.

25. D. all of the above choice are correct.

When the population is in the natural selection, variation can be inherited in the population. It can become adaptive to environment and individuals that can be produced are survive and reproduce.

26. A. phylum

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