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Lyrx [107]
3 years ago
6

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.

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The correct answer is: creative thinking.

Creative thinking means being able to consider and come up with something new. Creative thinking is a skill of an individual to perceive patterns that are not obvious and to solve problems in a new different way.


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The earliest organisms were completely heterotrophic in nature.
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The lysosome is an organelle that is important to cellular homeostasis through its degradation of different compounds. Degradati
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The presence of proton pumps in the lysosome membrane that allows the organelle to maintain higher concentrations of protons.

Explanation:

Lysosomes are known as a membrane-bound cell organelle that is present in many animal cells. They are spherical type vesicles in structure. Lysosomes contain hydrolytic enzymes these enzymes help in the break down of different kinds of biomolecules.

The lysosomal membrane helps to protect the cytosol, and rest of the cells, from the degradative enzymes which are present in the lysosome. They have the ability to maintains their pH by pumping in H+ ions (protons) from the cytosol across the membrane with the help of chloride ion channels and proton pumps.

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3 years ago
A DNA molecule with the base sequence A-G-C-T-C-A was used as a template for the synthesis of
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Answer:

A-G-C-U-C-A

Explanation:

A-G-C-U-C-A is the base sequence correctly represents the corresponding portion  of RNA molecule if DNA molecule with the base sequence A-G-C-T-C-A was used as a template. It is because the RNA molecule is formed from the same bases used in DNA except thymine. In RNA molecule, instead of thymine, uracil is attached with other nucleotide bases.

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2 years ago
Which statement BEST describes how mutations are related to evolution?
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<h3><u>Answer;</u></h3>

D) Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.

<h3><u>Explanation;</u></h3>
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3 years ago
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