Bryophytes (mosses) : Assignment 2 Flashcards
1
Q
What is the habitat of mosses
A
moist, shady environments
2
Q
name 2 reasons why mosses are so dependent water
A
- sperm cell needs water to swim to egg cell for reproduction
- do not have xylem and phloem to transport water, so they have to absorb water thought heir leaves.
3
Q
what is a Thallus?
A
a adult moss plant with no true roots, stem or leaves
4
Q
labels of a moss plant
A
- leaf like structure
- male reproduction organ
- female reproduction organ
- stem like structure
- rhiozoids
5
Q
what is the structural stability of their leaf
A
- no cuticile
- only one layer
- no vascular tissue
6
Q
to which gen does the moss plant belong
A
gametophyte gen because reproductive organs are found in between the leaves
7
Q
(look at picture) what are generations A and B called?
A
a_ gametophyte
b- sporophyte
8
Q
which process occurred at B?
A
fertilization
9
Q
(look at picture) supply labels for 1-5
A
1- leaf structure 2- rhiozoids 3- sporangium spores 4- sporangium 5- spores
10
Q
number of chromosomes at 2,4,5
A
2- 28 (n)
4- 56 (2n)
5- 56 (2n)
11
Q
what is the biological importance of mosses for humans?
A
- ground coverer
- acts as fertilizer
- binds soil and prevent soil erosion
- pioneer plants
