Answer:
All green algae produce large, stationary eggs
Explanation:
The research on the evolution of land plants has shown that the plants have evolved from the green algae especially the "Charophytes" which grows in on the rocks attached to the rocks on the seashore.
The evidence that plants evolved from the green algae was supported by the:
1. The storage material of both the plants and algae is the same that is starch
2. both the algae and plants have the sporophytic and gametophytic life cycle
3. Both the plants and algae possess the same type of the photosynthetic pigments like chlorophyll a,b,c,d and others.
4. Both have a cell wall made of cellulose
But the green algae produce the stationary eggs does not support the hypothesis as the plants not necessary produce the stationary eggs.
Thus, the selected option is correct.
if you have options
your answer is going to be
To calculate the dry weight of the entire spinach plant
Biomass can be defined as the total quantity or the total weight of the organism in a given area or volume. In order to calculate the biomass of the plant dry weight of the plant parts such as its stem, leaves is taken into consideration. The net biomass does not include water or the moisture content of the plant.
Answer:
Stage 1—High birth and death rates lead to slow population growth.
Stage 2—The death rate falls but the birth rate remains high, leading to faster population growth.
Stage 3—The birth rate starts to fall, so population growth starts to slow.
Stage 4—The birth rate reaches the same low level as the death rate, so population growth slows to zero.
Explanation:
Answer:
(2) low power: 100 small pollen grains
high power: 25 large pollen grains
Explanation:
Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).
For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.
The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.
Answer:
The third line of defence against pathogenic invasion is the adaptive immune response, which has two key qualities: It is specific (it can differentiate between specific microorganisms and respond accordingly) It is adaptive (it can produce a heightened response upon re-exposure - in other words, it has memory)
Explanation:
