Answer:
The correct answer would be option D.
Explanation:
Pollen of a plant is a gamete, that contains half of the alleles are required to produce the plant. Pollen fuse with stigma and complete the required alleles or genetic information.
Possible combinations in pollen would be one allele from each trait in every form either dominant or recessive. So ST, St, sT, st. would be the correct possible genetic combination present in a single grain.
Thus, the correct answer is option D.
Answer:
The cell wall is part of plant eukaryotes and prokaryotes.
Answer:
Viruses and bacteria helps to build up our immune system, specifically our adaptive immune response such that we will be able to eliminate such pathogens when our body comes into contact with them. This builds up the resilience of our immune system over time, similar to how vaccines work.
In bryophytes, haploid reproductive cells are produced by the gametophyte. <span>Gamete-producing organs are found on gametophyte plant (the dominant form) and they are called gametangia. The haploid organ that produces male gametes is antheridia, and female producing organ is called archegonia (it produces ovum).</span>
