Why is pollen needed in plant reproduction?

A. fertilization takes place in the pollen

B. pollen contains the egg cell

C. pollen contains the sperm cell

D. egg cells stick to pollen

Which of the following would be the LEAST likely to be associated with the development of motion sickness?

Of the three types of radioactivity characterized by rutherford which is/are not particles

Which of the following best compares the male and female reproductive structures of a gymnosperm? A Gymnosperms produce flowers, and the male stamens produce pollen that fertilizes the egg inside the female ovule.

How can the actions of humans affect the environment

Explain why the gas giants are many times larger than the earth

The main prey for the frogs in a certain pond are dragonflies. If the number of dragonflies is greatly reduced because of pesticide usage, how could the frogs adapt in order to survive?

When a male donkey is bred with a female horse, the offspring produced is a mule, which is healthy but sterile. Karyotyping experiments have revealed that horses and donkeys have different numbers of chromosomes, 64 for horses and 62 for donkeys.

If the genotype of both parents was Aa, what would be expected of the genotypes among their possible offspring?

Which of the following best identifies a physical digestive process? enzyme action heat formation peristalsis acid secretion

During the cell cycle, specifically g1 interphase, a cell must reach a sufficient size and produce enough atp in order to a. undergo mitosis. b. undergo cytokinesis. c. produce 2 daughter cells. d. replicate its chromosomes.