Atransition from a squirrel to a monkey is seen easily by a. the transition of paws to hands with finger nails and position of the thumb b. the transition to bipedalism c. the tranisition of tails because primates do not have tails d. none of the above

The correct answer is b. the transition to bipedalism

Explanation:

Bipedalism is the type of movement or locomotion in which any animal use their two legs to move. A squirrel do not have ability to do transition to bipedalism but hominids like monkey have the ability to walk and run on two legs. So this transition from squirrel to a monkey can easily be seen.

Bipedalism allow monkeys to use their arms for different purpose like hanging on trees, making or using tools, fighting, using their hands to communicate each other and show their emotions.  Reports shows that bipedalism require less energy for locomotion showing their advantage.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

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