review 1B

Question 1

flowers are (3)

Answer 1

• are reproductive structures
• attract pollinators
• are the site at which seeds are produced

Question 2

T or F
fleshy fruits attract animals for seed dispersal

Answer 2

true

Question 3

seeds (4)

Answer 3

-have plant embryo
-produced in flower
-low water content
-have to experience specific conditions to germinate

Question 4

what part produces pollen

Answer 4

anther

Question 5

what part produces the female gametophyte, which produces egg

Answer 5

ovule

Question 6

what part houses the ovule

Answer 6

ovary

Question 7

within the ovule of the carpel: (4)

mega

Answer 7

• the megasporocyte produces the megaspore
• the megaspore produces the female gametophyte
• the female gametophyte produces the egg
• the female gametophyte produces two polar nuclei

Question 8

pollen production in angiosperms (4)

micro

Answer 8

microspores are produced in the microsporangia
the microspores develops into the male gametophyte
the male gametophyte is the pollen grain
the generative cell in the pollen grain divides to form two sperm cells

Question 9

Which of the following occurs in double fertilization in angiosperms.

one sperm cell fertilizes the egg, and one fertilizes the endosperm

the two sperm cells fertilize the two polar nuclei

one sperm cell fertilizes the egg, and one fertilizes the two polar nuclei

the two polar nuclei fertilize the egg

the two polar nuclei fertilize the endosperm

Answer 9

one sperm cell fertilizes the egg, and one fertilizes the two polar nuclei

Question 10

T or F
endosperm provides nutrition for the developing plant

Answer 10

true

Question 11

T or F
The shoot system in plants stores starch and absorbs water and minerals.

Answer 11

false, the root system

Question 12

in plants guard cells do what

Answer 12

regulate the opening and closing of stomata

Question 13

in plants, parenchyma cells:

Answer 13

may carry out photosynthesis or store starch

Question 14

in plants, phloem: (3)

includes

Answer 14

transports sugars
has two way flow
includes sieve tubes and companion cells

Question 15

in xylem, tracheids (5)

Answer 15

transport water, narrow, have ONLY pits, present in vascular plants, one way flow

Question 16

T or F
cell membranes filter water

Answer 16

true

Question 17

water travelling the apoplastic route

Answer 17

moves around cells but is stopped by the Casparian strip

Question 18

Each of the following is true about water transport in plants EXCEPT

water molecules in xylem are held together by hydrogen bonds

evaporation of water from the meniscus in the leaves creates a pulling force called tension that pulls water upward

evaporation of water from leaves is called transpiration

energy from ATP is required to move water through xylem

Answer 18

NOT TRUE: energy from ATP is required to move water through xylem

use energy from sun

Question 19

In phloem loading involving movement of sugars from a leaf cell to the sieve tube, which of the following occurs by active transport?

movement of sugars out of the leaf cell

movement of sugars into the companion cell near the leaf cell

movement of sugars from the companion cell to the sieve tube through plasmodemata

all of the above

Answer 19

movement of sugars from the companion cell near the leaf cell

requires active transport

Question 20

what occurs in bulk flow of phloem sap through the sieve tube

Answer 20

water pressure builds in the sieve tube

Question 21

macronutrients are needed in _____ amounts

Answer 21

large

Question 22

limiting nutrients are

Answer 22

nutrients that are likely to be depleated from the soil and may limit plant growth and reproduction

Question 23

mobile nutrients move ____

Answer 23

move away from the dying parts of a plant to other parts

Question 24

N, P, S, Na+, K+, Ca++, Mg++

what group

Answer 24

macronutrients

Question 25

what group N, P, K+, Mg++

Answer 25

mobile nutrients

Question 26

what group N,P,K

Answer 26

limiting nutrients

Question 27

Why does O2 become depleted at the bottom of a eutrophic lake?

Answer 27

oxygen is used by bacteria that decompose dead algae that sink from the surface

Question 28

T or F plants grow easily through slit and clay

Answer 28

false, poor root penetration

Question 29

T or F sand and gravel help to retain water in soil

Answer 29

false poor water retention, good root penetration

Question 30

T or F minerals are absorbed from the soil into roots by active transport

Answer 30

true, uses energy

Question 31

Clay particles and organic molecules in soil tend to be negatively charged attract cations and prevent them from being leached from soil attract cations and make them less available to plants all of the above

Answer 31

all

Question 32

T or F Plants pump H+ into the soil to displace cations anchored to clay particles and make the cations more available to the plants.

Answer 32

true

Question 33

nitrogenase (3)

Answer 33

- facilitates nitrogen fixation - requires a lot of ATP - poisoned by oxygen

Question 34

T or F Carnivorous plants do not carry out photosynthesis and get all of their nutrients from carnivory.

Answer 34

false, they do carry photosynthesis but have limiting nutrients: N, P and get this from carnivory

Question 35

T or F Dodder is a parasitic plant that uses airborne chemicals to find its host.

Answer 35

true