quiz

Question 1

means a flower has both carpels and stamens

Answer 1

bisexual

Question 2

means a flower has only a staminate or pistillate

Answer 2

unisexual

Question 3

comprise the calyx.

Answer 3

Sepals

Question 4

comprise the corolla.

Answer 4

Petals

Question 5

male reproductive organ of a flower

Answer 5

androecium

Question 6

female reproductive organ of a flower

Answer 6

gynoecium

Question 7

Each __________ is made up of distinct layers of cells when mature.

Answer 7

microsporangium

Question 8

The outermost layer is the ________. It has a middle layer of cells with thin walls.

Answer 8

epidermis

Question 9

The innermost layer is the _______, which consists of large cells. It nourishes the developing grains of pollen.

Answer 9

tapetum

Question 10

Microspore mother cells undergo _______.

Answer 10

meiosis

Question 11

exine is made up of a durable substance called

Answer 11

sporopollenin

Question 12

The outer layer is the

Answer 12

exine and thin spaces (germ pores)

Question 13

grows out of the pollen grain through the germ pores.

Answer 13

pollen tube

Question 14

The inner layer is the

Answer 14

cellulosic wall (the intine)

Question 15

moves towards the periphery.

Answer 15

microspore

Question 16

The main part of the ovule is bounded by two coverings

Answer 16

integuments

Question 17

The ovule is attached to the ovary via a stalk

Answer 17

funiculus

Question 18

The basal part of the female gametophyte structure

Answer 18

chalaza

Question 19

contains one or more ovules (megasporangia), which act as future seeds

Answer 19

ovary

Question 20

develops as a type of projection from the placenta in the ovary.

Answer 20

ovule

Question 21

Within the nucleus, a single ________ cell becomes larger and it becomes the megaspore mother cell.

Answer 21

hypodermal

Question 22

This cell undergoes ___________, and then gives rise to four haploid megaspore cells.

Answer 22

meiotic division

Question 23

The enlarged structure, shaped like an oval and with 8 nuclei, is known as the _______

Answer 23

embryo sac

Question 24

Cell membranes and nuclei develop around the nuclei, except the two at the center of the sac, which is now termed as the _______

Answer 24

central cell

Question 25

These are provided with buds which develop into a new plant and are therefore used to carry out vegetative propagation of the plant in the field.

Answer 25

Vegetative Reproduction in Angiosperms

Question 26

The process by which animals propagate on earth and it is also the process through which genetic materials are transferred to offspring.

Answer 26

Animal Reproduction

Question 27

The formation of identical twins by the separation of two identical cells in the early embryo is a form of

Answer 27

asexual reproduction

Question 28

occurs when a new individual is formed from the union of two sex cells, or gametes.

Answer 28

Sexual reproduction

Question 29

the zygote develops into a new organism.

Answer 29

mitotic division

Question 30

The _________ are formed in the sex organs, or gonads (the testes and the ovaries), and are haploid.

Answer 30

gametes

Question 31

The process of sperm formation

Answer 31

spermatogenesis

Question 32

The process of egg formation

Answer 32

oogenesis

Question 33

Virgin birth is common in many species of arthropods.

Answer 33

parthenogenesis

Question 34

Some species are exclusively all female

Answer 34

parthenogenetic

Question 35

Another variation in the reproductive strategies used by animals is

Answer 35

hermaphroditism

Question 36

The change from female to male is

Answer 36

protogyny

Question 37

the change from male to female is

Answer 37

protandry

Question 38

Recent evidence suggests that the __________ appears to have been highly conserved during the evolution of vertebrate groups.

Answer 38

sex-determining gene (SRY)

Question 39

commonly occurs among organisms in the ocean, where water allows for the rapid dispersion of sperm or ova towards others of the same species.

Answer 39

External fertilization

Question 40

is the introduction of the male gamete into the female’s reproductive tract.

Answer 40

Internal fertilization