41. Three patches(A, B.and C) of natural pine forest were equal distance apart f

Question

41. Three patches(A, B.and C) of natural pine forest were equal distance apart from eact (Picture the points of a triangle). Two of the patches (A and B) were conmected to each other by a narrow strip of forest. Patch C is not connected to elither A or Which of these data would serve as evidence that this forest corrider was effective in promoring movement of organisms among patches a. Genetic diversity of Western jays within each patch was the same b. Pine nuts tagged in Patch A were subsequently found in Patch B but not P c. Squirrels were captured in Patch B, marked and released in B. Equal numbers of marked squirrels were later captured in Patches A and C d. Rabits were similarly arured atch CMor rabits were recovered in Pach A than in Patch B. e. No deer were found in any of the patches 42. In diploid organisms, the benefit added to one's inclusive fitness by rearing an offspring, of one's own is _that added by rearing an offspring of a sister a the same as b. twice c. half d. three times e. four times 43. Which of the following is true about pigeon flocking behavior? a. There is no cost to flocking b. Pigeons in flocks are more likely to be preyed on than are solitary pigeons c. Solitary pigeons face a greater risk of disease than do pigeons in flocks d. Pigeons forage better in flocks. e. Pigeons in flocks are less likely to be caught by predators 44. The water vascular system of echinoderms is used by various species for a. reproduction b. digestion c. movement d. nervous system communications e. nurture of their young 45. Plants were first able to colonize land because of which adaptation(s)? a. secondary growth b. vascular tissues c. waxy cuticle d. mutualism with mycorrhizae e. all of the above 46. The process of photosynthesis greatly changed the ancient physical world by a. adding oxygen to the atmosphere b. removing toxic carbon dioxide from the atmosphere c. adding water vapor to the atmosphere d. reducing carbon dioxide dissolved in the oceans, thus raising the pH e. reducing the amount of organic matter

Explanation / Answer

41.
Correct option:

Explanation: This option justifies the narrow strip of forest connecting A and B in the spread of squirrels from A to C.

42.
Correct option:

Explanation: An individual's own son carries one half of the individual's gene and is counted as one offspring equivalent. A siblings child (sisters child) will half offspring equivalent. Hence, the fitness of raring one's individual child as compared with siblings is twice.

43.
Correct option:

44.
Correct option:

Explanation: The water vascular system of echinoderms is a similar hydraulic system which is used for mainly locomotion along with helpings in the transportation of food and waste materials.

45.
Correct option:

Explanation: Plants were able to first colonize the land because of its adaptive capabilities like waxy cuticle, the presence of vascular tissues, secondary growth, and mutualism with mycorrhizae.

46.
Correct option:

Explanation: Before the start of the photosynthetic process in the ancient world anoxic condition prevailed. The adding of oxygen in the atmosphere was a major event in the development of aerobic organism on the surface of the earth.

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