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Viral genomes may comprise Choose one: A. double-stranded RNA. B. double-stranded DNA. C. double or single-stranded DNA or doubl

wlad13 [49]

Answer:

The correct answer is- C. double or single-stranded DNA or double or single-stranded RNA.

Explanation:

All the viruses are intracellular parasites which means they obtain their nutrition from their host. Viruses do not have cellular level of organization. They only have their nucleic acid which is surrounded by a protein coat called a capsid.

The nucleic acid in viruses can be of different types. It can be single or double-stranded DNA or single or double-stranded RNA. Their genome can be linear or circular. They inject their genetic material in their host and introduce it in the host genome. Therefore the correct answer is C.

6 0

4 years ago

Which organelles are found only in plant cells and not in animals cells

sweet [91]

Answer: Chloroplasts

Explanation:

4 0

3 years ago

Why do biologists assign each organisms a universally accepted name?

mojhsa [17]

So every organism is individually classified without the worry of mixing up two organisms like a fly and nat.

8 0

3 years ago

Read 2 more answers

6. species Closely related of orchids never mate in the wild because they bloom at different times. This is an example of ______

Dimas [21]

Answer:

temporal reproductive isolation

Explanation:

The correct answer would be temporal reproductive isolation.

Reproductive isolation generally refers to series of biological mechanisms or processes that prevent members of different species from mating/fertilization or prevent the product of their mating to be invalid.

Some reproductive isolation processes prevent members of different species from mating or prevent fertilization as a result of mating. These processes are known as pre-zygotic reproductive isolation mechanisms.

Some other processes ensure that the product of fertilization (when it occurs) is invalid. These are known as post-zygotic isolation mechanisms.

A good example of the pre-zygotic reproductive isolation process is when closely related by different species bloom at different times. This will prevent mating or cross-pollination to happen between the different species. This is known as temporal reproductive isolation.

5 0

3 years ago

(a)The same kind of plants grown & cultivated on a large scale at a place is called_____ (b) The first step before growing c

valkas [14]

Answer:

Following the answers are given below:-

Explanation:

(a) Plants of the same type that are grown and grown at a large-scale spot are referred to as crops. They are mostly cultivated for useful products.

(b) The very first step in the growth of plants is soil time to prepare to easy way to help water infiltration, appropriate oxygenation, and soil microbial economic expansion. Soil program includes the softening and attempting to turn of plant roots through all the plow procedure. The next step in growing crops is the collection of safe crops that is performed for some time by placing the seed in a water-filled flask.

(c) Infected seeds are lighter and hollow in strength and therefore rise at the top of the atmosphere. The good seeds calm down a bit at the edges, becoming heavier, which is used for sowing.

(d) Sunlight, water, and nutrients are essential requirements for seed germination and seedling growth. Seed seeding to the right depth and adequate spacing among seeds and seedlings confirm that these criteria are fulfilled.

(e) The principal Kharif crops in India are corn, maize, and cotton.

(f) individuals are used for producing plant manure.

(g) A combination of calcium acid phosphate and calcium sulfate formed by processing sulfuric phosphate stone: used primarily as a phosphate.

(h) Vegetables and lean meats are the two major categories of commercial grain crops. The word applies primarily to seeds from family Fabaceae plants, such as wheat, corn, and rice; seeds of non-edible vegetation types are often referred to as "grains."

4 0

3 years ago