Question

1A) Which of the following statements relating to the coelom is incorrect:

A) The presence of a coelom serves to separate the activities of digestion from those of movement and locomotion.

B) Organisms with a coelom have a higher reproductive potential because they can produce more eggs and sperm or retain their embryos within for internal development.

C) The digestive system of organisms with a coelom is usually longer and more specialized.

D) Coeloms are only found among invertebrate phyla; vertebrates don’t have a body cavity.

1B) Which of the following statements is correct?

A) Both reptiles and gymnosperms evolved at about the same time, following the Permian extinction, when the earth’s climate was arid and dry.

B) Both reptiles and amphibians are more abundant and diverse as species today than at any other time in their history.

C) Amphibians rely on a larval form for development, whereas reptiles do not.

D) a and c

1C) Which of the following characteristic of seeds is incorrect?

A) Seeds are produced by both Gymnosperms (conifers) and Angiosperms (flowering plants).

B) Seeds serve as an evolutionary adaptation in higher plants that replaces the functions performed by flagellated sperm cells.

C) Seeds provide a means of delaying development until conditions favor survival of the embryo; seedless plants like ferns don’t have this option and suffer very high mortality.

D) Among flowering plants, seeds are usually enveloped inside of the fleshy tissues of the fruit, whereas in conifers they are not.

Answer 1

1A - D)Coeloms are only found among invertebrate phyla; vertebrates don’t have a body cavity.

All the vertebrates contains the body cavity and thus they have more evolved complex organ system such as digestive systems,reproductive system.Due to evolved reproductive system, the organism were able to produce the more egg or sperm and retain ther embryo within the cavity for internal development.The coelom helped in separating the space for digestion processes from the those of movement and locomotion.