Please answer these following questions only if you are sure

Solution

14. B. Choanoflagelleates share common ancestry with animals.

Analysis of the combined data set (concatenated) along with sequences from other closely related species (animals and fungi) demonstrate that choanoflagellates are strongly supported as monophyletic and confirm their position as the closest known unicellular living relative of animals.

15. B. Multicellular haplaid gamete producing organism.

Two single-celled haploid gametes, fuse to form a single-celled diploid zygote. The single-celled diploid zygote germinates, dividing by the normal process (mitosis), The result is a multi-cellular diploid organism, called the sporophyte (because at maturity it produces spores).

     When it reaches maturity, the sporophyte produces one or more sporangia (singular: sporangium) which are the organs that produce diploid spore mother cells (sporocytes). These divide by a special process (meiosis) that reduces the number of chromosomes by a half. This initially results in four single-celled haploid spores, each containing n unpaired chromosomes. The single-celled haploid spore germinates, dividing by the normal process (mitosis), which maintains the number of chromosomes at n. The result is a multi-cellular haploid organism, called the gametophyte (because it produces gametes at maturity).

16. B. Haploid, gametes.

explanation in the above question.