Biology Mid Term

When plants are dormant, what type of reproduction works best?

Grafting

In angiosperms, are pollen grains made when haploid spores undergo mitosis or meiosis?

Mitosis

In what way is fertilization different in angiosperms than in other plants?

Two fertilization events take place in angiosperms, producing a zygote and endosperm.

How many nuclei are contained within an angiosperm embryo sac?

eight

What structure forms during angiosperm fertilization but does not form during fertilization among other types of plants?

A Triploid cell

In angiosperms, pollen grains are produced in what?

Anthers

In angiosperms, flowers are adaptations for reproduction. How would you describe flowers that are pollinated by animals?

Brightly colored Produce nectar to attract pollinators Pollinate more efficiently than wind-pollinated plants.

When a plant reproduces vegetatively, how are offspring produced?

By Mitosis alone

What are the specialized leaves of a flower that do not produce gametophytes called?

Carpel and Stamens

For a successful graft, the two plants involved should be dormant, herbaceous, similar or closely related?

Closely related

Which of the following correctly lists the terms in order from smallest to largest? Fruit, Seed, Embryo

Embryo, Seed, Fruit

In angiosperms, the ovary surrounds seeds in what structure?

Fruit

In angiosperms, are pollen grains haploid or diploid?

Haploid

When a pollen grain lands on the stigma of a flower of the same species, what is produced?

Pollen Tube

Name the parts of the female structure of a flower.

Style Stigma Ovary

How can vegetative reproduction be a disadvantage?

When conditions in the physical environment suddenly change.

Is grafting similar to sexual reproduction? How is it different?

Yes, similar, except that it takes place between two different species.

In angiosperms, a zygote and endosperm form as a result of what?

double fertilization