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.
Answer:
Germinated seeds without leaves are used in the experiment in order to find good results.
Explanation:
It is very important to use germinated seeds without the presence of leaves in order to carried out the experiment because if the leaves are present, the process of photosynthesis started which automatically increases the rate of respiration of the seed. This test is performed in order to determine the rate of respiration not photosynthesis. So leaves will not used in the experiment in order to avoid any problem with the results.
A mutation in either a hormone or its receptor might affect the physiological system that it normally regulates by either blocking hormone effect or creating a completely different effect.
Hormones can be called chemical messengers which coordinate distinct functions in the body. Many glands, organs and tissues produce and release hormones, many of which constitute the endocrine system.
A hormone will only act on a part of the body if it fits i.e. if the cells in the target tissue have receptors which can receive the message of the hormone. Given that hormones carry instructions in their structure, mutations alter their structures by changing nucleic acid sequences which blocks hormone function.
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Answer:
Soil is the basic requirement for any plant or microorganism(that lives on land) to grow and get all the required amount of nutrients from the environment. Because, when a seed is planted inside a specific amount of soil it grows and develop in to a bud having its initial structure well set for having roots at one end and stem at the other, however the soil provides the bud the main protection and support which is required to balance its structure in a proper way or orientation.
As, there are different layers of soil and each layers consists of a different level or amount of components in it and provides different specification to the over all development of plant life.
Explanation:
- Along, with that there are different level of nutrients inside the different samples of soil taken from various regions or areas which makes it more different in nature to support life and give it a chance to grow or develop itself in it. As different species of plant life requires a more different form minerals and constituents to grow in which brings diversity among plant life, as not all of them requires the same sample of soil to grow in.
- Having, the specific structure of molecules in it, the soil also acts as a barrier for the plant life to save it self from any foreign object or pathogen.
