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Valentin [98]
3 years ago
14

What novel innovations did the evolution of the seed plant life cycle involve compared with other groups of land plants? Select

all that apply.O dispersal of multicellular gametophytes O dispersal through air O an ecologically dominant sporophyte generation O fertilization in the absence of environmental water O dispersal of multicellular sporophytes
Biology
1 answer:
krek1111 [17]3 years ago
7 0
<h2>Fertilization in the absence of environmental water</h2>

Explanation:

  • About 360 million years ago, seeds appeared on Earth.
  • The seed bearing plant is divided into two categories:
  • Gymnosperms (naked seeds)
  • Angiosperms (seeds enclosed in ovary)
  • Seed bearing plant produce Microspores which leads to the formation of pollen grains. The pollen grain serve as a carrier for the sperm to the egg.
  • Seed bearing plant produce Megaspores, which formed within the ovules, and results into the formation of seed, when sperm fertilizes with the egg.

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Given what we know about the biological mechanisms behind anaerobic exercise, we can confirm that the production of lactate ensures a continuous supply of NAD.

In order for us to undergo any physical exercise, it is imperative that we are able to produce energy within our cells. The energy used by cells is in the form of a molecule by the name of ATP, which is produced primarily through a process known as <em>Glycolysis</em>.

This is relevant given that in order for glycolysis to happen, a key protein is required known as NAD+. Lactate is produced from pyruvate only under anaerobic conditions because these are conditions that lack oxygen which is the only other source of NAD+, therefore, pyruvate must be converted to lactic acid to make it possible to continue glycolysis and the production of ATP.

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2 years ago
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3 years ago
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What does Spectral Class mean?<br>(In your own words) ​
tatyana61 [14]

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3 years ago
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Identify the labeled structures.
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5 0
3 years ago
A marine biologist explains that the salmon adapts to its environment through descent with modification. What is "descent with m
gizmo_the_mogwai [7]

<u>Answer</u>: A heritable trait can be changed from one generation to another.

<u>Explanation</u>:

  • The concept of <em>descent with modification</em> was given by Darwin which simply states that the traits are passed on from the parents to the offsprings.
  • The traits that can be passed on are known as <em>heritable traits</em>.
  • These traits are passed on with the help of the genes.
  • So this passing on of traits explains the term <em>descent</em> in this concept. However, there are always chances that these heritable traits can be changed due to environmental factors or due to the process of recombination and thus the term <em>modification</em>.
  • So <em>descent with modification</em> means that a<em> heritable trait is passed from parents to offspring but it can be changed from one generation to another.</em>
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3 years ago
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