Question

select each correct statement regarding gametogenesis/gametes in animals and plants.
check all that apply
melosis in both plants and animals produces haploid products
egg production in animals and plants is similar because in both cases only one viable product is made
both plants and animals have sporophytic and gametophytic portions of their life cycle
pollen grains are made up of a single cell

Explanation:

• Meiosis in both plants and animals produces haploid products. In animals, meiosis in germ cells forms haploid gametes (sperm and eggs). In plants, meiosis in the sporophyte generation forms haploid spores, which then develop into the gametophyte generation (gametophyte produces gametes via mitosis).
• Egg production in animals and plants is similar in that in both cases only one viable product is made. In animal oogenesis, one egg (ovum) and polar bodies (non - viable) are formed. In plant megasporogenesis (related to egg production in the ovule), typically one functional megaspore (which develops into the female gametophyte with the egg) is formed from the four products of meiosis.
• Plants have a clear alternation of generations with distinct sporophytic (diploid) and gametophytic (haploid) portions. Animals do not have a gametophytic portion in their life cycle. The animal life cycle is mainly diploid (somatic cells) with haploid gametes.
• Pollen grains are not made up of a single cell. A pollen grain (microgametophyte) in flowering plants is composed of at least two cells: a generative cell (which will divide to form two sperm cells) and a tube cell.

Answer:

Melosis in both plants and animals produces haploid products, Egg production in animals and plants is similar because in both cases only one viable product is made.