All categories

3 years ago

In angiosperms, pollen grains are

Biology

2 answers:

o-na [289]3 years ago

7 0

C. Hapliod, and are made when haploid spores undergo mitosis

Vladimir [108]3 years ago

4 0

Answer:

The correct answer would be c. haploid and are made when haploid spores undergo mitosis.

Angiosperms are flowering plants.

Pollen is formed in the anther of the flowering plant. Pollen is haploid in nature as they are formed from the meiotic division of microspore mother cell. This process is termed as microsporogenesis.

Later, these microspores develop into the microgametes by the process termed as microgametogenesis. Under this process, the microspore undergoes mitotic division and produce two haploid nuclei. One nucleus is termed as the vegetative nucleus and another is termed as the generative cell.

You might be interested in

Aldosterone ________. A) is secreted by the posterior pituitary B) functions to increase sodium reabsorption C) presence increas

Vesnalui [34]

Answer:

Option B) functions to increase sodium reabsorption.

Explanation:

Aldosterone is an hormone secreted by the cortex of the adrenal gland. The adrenal gland is situated at the superior poles of the right and left kidneys.

Aldosterone regulates sodium homeostasis and as such helps to control blood volume and blood pressure.

Aldosterone is secreted in response to decreased blood pressure (hypotension) to increase sodium reabsorption from urine, sweat, and the gut. Also excessive aldosterone levels (too high sodium) can lead to high blood pressure (hypertension).

5 0

3 years ago

Maria are flat areas on the moon’s surface.<br> true or false ??

jolli1 [7]

True, maria are dark, smooth, <em>flat </em>surfaces on the moon.

hope this helps:)

5 0

3 years ago

Read 2 more answers

Which process does not occur in the Krebs cycle?

nikdorinn [45]

Answer:

The correct answer is b glucose is broken down into two pyruvate molecules.

Explanation:

Krebs cycle is one of the most important step of aerobic respiraion.Krebs cycle occur within mitochondrial matrix.During krebs cycle the acetyl CoA generated from pyruvate reacts with oxalo acetate in a cyclic manner to regenerate 4 carbon compound oxaloacetate.

During krebs cycle pyruvate is broken down or oxidized to form 2 carbon compound known as acetyl CoA and carbon dioxide as byproduct.

But the breakdown of glucose into two pyruvate molecules occur during glycolysis.

7 0

3 years ago

First, drag labels to targets (a) and (b) to indicate whether these environments are hydrophilic or hydrophobic. 2.next, drag th

goldenfox [79]

Attached is the image respective of the question.

First, both the extracellular fluid and the cytoplasm are hydrophilic. The phosphate head of the phospholipid is hydrophilic hence it either faces the extracellular fluid and the cytoplasm. The lipid tail of the phospholipid is hydrophobic hence it is confined in the middle of the plasma membrane. Both cytoplasmic and the extracellular fluid ends of the transmembrane protein are hydrophilic and the middle part of the transmembrane protein is hydrophobic.

5 0

3 years ago

Which of the

insens350 [35]

Answer: Line lol

Explanation: Line Charts are excellent for showing one or more metrics over a period of time, they can also be used to show correlations

8 0

2 years ago

Read 2 more answers