Download Plant Test Review

Plant Test Review
1.
Plants make their own food by converting solar energy into chemical energy (glucose).
2.
A plant cell has a rigid coat of cellulose contains mitochondria and chloroplasts, has
DNA and a well defined nuclear membrane.
3.
In the nitrogen cycle, nitrogen-fixing bacteria "fix" nitrogen for use by plants,
consumers or people eat the plants and absorb the usable nitrogen.
4.
Explain what would happen if those plants were destroyed by chemicals and no longer
available for consumption. The nitrogen cycle would stop
5.
The chloroplasts in the plant cell uses light energy to produce sugar. (an organelle
found only in plant cells)
6.
The cuticle on a leaf protects it from drying out.
7.
A plant growing toward a light source is known as phototropism. This happens because
the hormone Auxin causes the cells on the shaded side to grow longer.
8.
Gravitropism means the roots grow into the soil
9.
The function of the root hairs is to absorb more water
10.
A stoma is surrounded by two guard cells. Depending on the environmental factors, the
guard cells open or close the stoma. Name the two gases that are exchanged for
photosynthesis: 1) Oxygen
11.
2) Carbon Dioxide
The order of the nitrogen cycle is: nitrogen in the soil is fixed by the bacteria and is
absorbed by the plants and eaten by the animals.
12.
Why do cacti keep their stomata closed for much of the day? Closing the stomata limits
water loss through transpiration
13.
Because bryophytes do not have vascular tissue, they absorb water by osmosis, grow
close to the ground, and can draw up water only a few centimeters above the ground.
14.
The xylem transports water within a plant.
15.
Where does reproduction take place in angiosperms? flower
16.
Name 2 parts of the flower that are not involved in sexual reproduction: Sepal &
Pedicle
17.
What are 2 functions of roots in plants: Absorb water & anchor the plant
18.
Name the gases that diffuse in and out of the leaf through the stomata. Oxygen &
Carbon Dioxide
19.
The function of the stem is to transport substances between the roots and shoot
system.
20.
What gas is produced by plants? Oxygen
21.
Define prokaryote: A cell that lacks a nuclear membrane around its DNA
22.
Define unicellular: Single cell
23.
Define eukaryote: A cell that has a nuclear membrane around its DNA
24.
Define multicellular: Many celled
25.
A plant is which of the two words defined above? Multicellular, Eukaryotic, Autotroph
26.
A short plant in the tropical rainforest needs what type of leaf to survive? Broad (wide)
leaves
27.
What gas is released in photosynthesis? Oxygen
28.
What gas is released in respiration? Carbon Dioxide
29.
How do the root system and the shoot system work together? The roots absorb water
and it is transported to the shoot system by the vascular tissue (xylem).
30.
In which layer of the leaf does photosynthesis occur? Palisade Layer
31.
Label the cross section of the Leaf
Q. Cuticle
R. Palisade Mesophyll
T. Vascular Tissue
S. Spongy Mesophyll