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vlabodo [156]
3 years ago
12

Alternation of generations in plants refers to the fact that plants make a multicellular haploid structure (free living in some

or in the flower in angiosperms) via meiosis and subsequent mitosis and then make gametes through mitosis. These gametes undergo fertilization toproudece a multicellular free living plant that is diploid. The result is that there is a multicellular haploid generation and a multicellular diploid gerneations which alternate.
A. True
B. False
Biology
1 answer:
Yuki888 [10]3 years ago
8 0

Answer:

True.

Explanation:

The life of a plant alternates between haploid and diploid generations. From a fully matured diploid plant (2n) which is known as sporophytic generation a lot of spores which are haploid are produced by the process of meiosis. By the process of mitosis, these spores then develop into new multi-cellular plant which is also haploid just like spores (n), this phase of plant life cycle is known as gametophytic phase. This haploid plant is capable of producing gametes (n) which are also haploid. When two such gametes from the same or different plant fuse with each other a diploid cell is produced which is known as zygote (2n). This zygote subsequently divides and grows into a diploid plant which is a part of sporophytic generation. This is how the entire life cycle of various plants alternate between gametophytic and sporophytic phase.

This diploid plant then later again produces spores and the cycle of reproduction goes on in the same manner as described above.

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k0ka [10]

Answer:

Fight or flight response.

Explanation:

Fight or flight response is also known as hyper arousal response. This response is mainly generated in case of attack and harmful event.

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3 years ago
Linguists know how people began to speak.<br><br> A. true <br> B. false
Phantasy [73]
The correct answer should be True!
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3 years ago
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Anna11 [10]

Explanation:

Question 1

Air pollution is the introduction of harmful gases and substances into the atmosphere that renders it unfit for use for life. Some of these toxic gases and particulates are:

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  • Smoke
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Question 2

Natural forms are the original nature or outlook of a substance. Examples of natural forms are:

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Question 3

Anthropogenic cause of pollution are human causes of pollution. Some of these are:

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Question 4

Fossil fuels are fuel types that forms from natural process in which organisms are decomposed anaerobically to preserve their energy components. Some of these fuels are:

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Question 5

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Question 6

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Question 7

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It shows how clean and polluted the air is.

Question 8

The air quality index uses different colors to alert people about the quality of air. Each color represents different health implication of air quality:

     Attached image shows the different colors used to alert people of about the air quality.

Question 9

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Learn more:

Air pollution brainly.com/question/10743354

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3 years ago
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nikitadnepr [17]
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