Botany Lecture Reviewers

Question 1

Two purpose of reproduction:

Answer 1

1. To perpetuate identical child plants by asexual reproduction.
2. To perpetuate varied child plants by sexual reproduction.

Question 2

HORMONES:

Answer 2

1. CYTOKININ
2. INDOLACETIC ACID (IAA)/AUXIN
3. GIBERRELIC ACID
4. ABSCISSIC ACID
5. ETHYLENE

Question 3

Cell Division and Differentiation

Answer 3

CYTOKININ

Question 4

Growth stop

Answer 4

INDOLACETIC ACID (IAA)/AUXIN

Question 5

Germination , Elongation

Answer 5

GIBERRELIC ACID

Question 6

SEED DORMANCY , DROUGHT RESISTANCE

Answer 6

ABSCISSIC ACID

Question 7

Ripening , Stress Response and Leaf Abcission

Answer 7

ETHYLENE

Question 8

Plant go through the cycle known as :

Answer 8

HETEROMORPHIC DIPHASIC /DIPLOBIONTIC ALTERNATION OF
GENERATIONS

Question 9

The plant has two phases/ generations/alterants

Answer 9

DIPHASIC

Question 10

Gametophyte (n) and Sporophyte (2n)

Answer 10

DIPHASIC

Question 11

The two alterants are different in apperance

Answer 11

HETEROMORPHIC

Question 12

process where a haploid egg cell and haploid sperm cell of a species
unite to form a _____

Answer 12

diploid zygote

Question 13

process where a haploid egg cell and haploid sperm cell of a species
unite to form a diploid zygote

Answer 13

FERTILIZATION OR SYNGAMY

Question 14

in the anther undergo
meiotic division.

Answer 14

Microspore mother cells or microsporocytes

Question 15

A microspore is produced , nursed by ____

Answer 15

tapetum

Question 16

The microspore undergoes mitotic division and produces two ____

Answer 16

sperm nuclei and a pollen tube nucleus.

Question 17

The pollen tube nucleus will constitute the vegetative cell and the
sperm nuclei will constitute the ____

Answer 17

generative cell

Question 18

The pollen nucleus will elongate when the pollen reaches the stigma,
allowing the sperm cells to enter the ovule

Answer 18

MICROGAMETOPHYTE FORMATION

Question 19

in the ovule undergo meiotic division

Answer 19

Megaspores mother cells or megasporocytes

Question 20

Four nuclei are produced but one remains to grow into megaspores
nursed by the ____

Answer 20

nucellus or parenchyma cells in the ovule

Question 21

The megaspores will undergo three mitotic divisions to produce ___

Answer 21

eight nuclei

Question 22

The eight nuclei become seven cells and will become the ff:

Answer 22

1 Egg cell
2 Synergids
1 Binucleate Polar Cell and
3 Antipodal cells

Question 23

The egg with two synergids is called

Answer 23

the egg apparatus

Question 24

Intricate cell wall

Answer 24

MICROGAMETOPHYTE

Question 25

Exine outer layer having sporopolleni

Answer 25

MICROGAMETOPHYTE

Question 26

substance that prevents the pollen from drying up an dinner intine layer

Answer 26

sporopollenin

Question 27

Venue for the whole fertilization process

Answer 27

MEGAGAMETOPHYTES

Question 28

VARIATION IN THE POLLEN GRAIN

Answer 28

1. SURFACE 2. PRESCENCE OF POLLEN OPENINGS

Question 29

SURFACE

Answer 29

a. SCABRATE b. VERRUCOSE c. SPINOSE

Question 30

PRESCENCE OF POLLEN OPENINGS

Answer 30

a. APERTURATE b. Perturate

Question 31

Smooth

Answer 31

SCABRATE

Question 32

Rough

Answer 32

VERRUCOSE

Question 33

Porous

Answer 33

SPINOSE

Question 34

No Opening

Answer 34

APERTURATE

Question 35

With an opening; Can be Monoperturate ( 1 pore) or polyperturate ( 2 or more pores)

Answer 35

Perturate