) radial and determinate cleavage, blastopore becomes nouth, schisecoelous Weter
ID: 272100 • Letter: #
Question
) radial and determinate cleavage, blastopore becomes nouth, schisecoelous Weter censervation in plants is assisted by Al the cutide ) transgirstion 1) both A and 32. The haploid stage in s plant fe cycle is called 33. A swim bladder allows a fish Al regalate its water content in seawater C) regulate its salt content in trestwater 34. The monotremes are cltsified as mammals because they 0) have mammary glands E)give birth tolbreyaa%rater than layeggs. Aj are endodems B) are carshores C) are amnvores 35. A Characteristic of hominids is A) larger brain D) monogamy E] both A andB C) nighttime activity 36. Mest Cnidarians A) exist only as medusa in their life cycle 6) exist only as polyps in their life cycle. Q) encyst when they encounter adverse environmental conditions. D) altemate between a polyp and a medusa during their life cycle E) none of the above.Explanation / Answer
29. The correct option is B. Protostomes undergo spiral cleavage during their cell division. The development is of determinate type where blastomeres are destined to form a particular organ. Here, the mouth is typically formed from the blastopore and the kind of development can be referred to as schizocoelic development. Here, the coelom is formed by spliiting the mesodermal embryonic tissue.
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