Reproduction Life Cycle

Question 1

What best describes the life-cycle of all embryophyte plants?

Answer 1

alternates between a multi-celled diploid generation & an multi-celled haploid generation.

Question 2

The plant organ where meiosis occurs is called…

Answer 2

Sporangium

Question 3

The 4 cells that are the immediate result of meiosis in plants are called ___.

Answer 3

Spores

Question 4

In bryophytes, lycophytes, ferns, and conifers, (but reduced to obscurity in angiosperms) the gametophyte organ that produces sperm is called a(n) ___.

Answer 4

Antheridium

Question 5

The term for the haploid plant generation is ___.

Answer 5

Gametophyte

Question 6

The term for the diploid plant generation is ___.

Answer 6

Sporophytes

Question 7

In animals, cells originating from meiosis

Answer 7

differentiate directly into gametes (sperm or egg) without any additional cell divisions.

Question 8

Seed plants __

Answer 8

have a heterosporous life cycle.

produce male gametophytes (pollen) that are small and mobile.

have a special megasporangium (=ovule) that retains the female spore where it develops within the ovule into an egg-producing gametophye.

have the sporophyte as their dominant vegetative generation; the gametophyte role is strictly to complete part of the reproductive cycle.

all of the options except the ‘none’ option and the ‘homosporous’ option are true.

Question 9

The opening in an ovule through which the pollen tube can enter is called the ___.

Answer 9

Micropyle

Question 10

The unusual feature of the angiosperm life cycle where one sperm fertilizes the egg to form a zygote and a second sperm fertilizes an additional cell that results in nutrition-tissue called endosperm is known as ____.

Answer 10

Double Fertilization

Question 11

The transfer of the small mobile male gametophyte of seed plant to a receptive surface on the female parts of another plant of the same species is called ___.

Answer 11

Pollination