Animals only
Athropods and flowering plant only
Plants only
Answer:
Animals only is the correct answer
Explanation:
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Crownmeasbrainliest:)
Answer:
B. viral reverse transcriptase to make a DNA copy that is integrated into the host genome and then host RNA polymerase transcribes it.
Explanation:
RNA retrovirus when enters into its host cell it first use its reverse transcriptase enzyme and converts its RNA genome into the DNA so that viral DNA can be incorporated into the host cell and it can be replicated with the host cell.
One of the famous example of RNA retrovirus is HIV which infect CD4 cells and converts its RNA into cDNA with the help of reverse transcriptase enzyme and then this DNA enters the nucleus of the cell and incorporates into the host genome. Then it use host machinery to be transcribed. So the correct answer is B.
c. lungs.
b. throat.
d. pharynx.
The air is filtered, warmed, and moistened primarily in the nose and mouth. These parts play a key role in preparing the air for the lungs and maintaining respiratory health. The throat and pharynx, act as pathways to guide the air to the lungs.
The process of warming, filtering, and moistening the air takes place primarily in the nose and mouth (option a). The primary function of our nose is to filter out any impurities (like dust, pollen, etc.), warm, and moisten the air that we inhale. The mouth also plays a similar role to some degree. However, the actual process of gas exchange happens in the lungs. The throat and pharynx, on the other hand, mainly serve as conduits to direct air from the nose and mouth into the lungs.
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c. weathering
b. leaching
d. littering
b. leaching
Minerals found in the B horizon were dissolved in water and carried there by a process called leaching
B. epidermis
C. guard cell
D. spongy mesophyll
The structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
The first plants that were tends to live on land are the Non-vascular plants, which include mosses and liverworts, which were the first-ever land plants. They do not have much of an internal support system but have slightly simpler material for the same tasks.
Early in their history, land plants also evolved a cuticle. The cuticle is the structure that involves a waxy layer on the outer surface of the aerial parts of a plant that helps to prevent water loss. Sometimes cuticle with details of epidermal cell structure is preserved in fossil plants.
Guard cells play an important role in the opening and closing of the stomata. While epidermis is the outer cell which prevent the whole plant form injury.
Therefore, the structure of plants that allowed the first land plants to survive out of water is known as the cuticle. Thus, the correct option for this question is A.
To learn more about Cuticle, refer to the link:
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Answer:
A
Explanation: