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2 years ago

Which is an example of one of the first land plants to evolve

Biology

2 answers:

alisha [4.7K]2 years ago

7 0

The first land plants evolved around 350 million years ago and are known as mosses.

Further explanation

Mosses are generally found in shady or damp places. They are flowerless plants that appear o be small in size. These plants have simple leaves that are attached to unbranched or branched stem. The stem has a limited role in the conduction of nutrients and water. The mosses lack seeds and results in the formation of sporophytes after fertilization. The sporophytes contain spores. These plants are categorized as non-vascular plants along with liverworts and hornworts due to the absence of the vascular tissue system.

Mosses come under the division Bryophyta. Mosses are used as decorative plants and are an important constituent of peat. These plants absorb water through the leaves and also perform photosynthesis to prepare their food. They lack xylem tracheids which generally bear water in vascular plants.

Unlike vascular plants, mosses possess single chromosomal set and are therefore haploid. The stage during which mosses have paired chromosomes is the sporophyte stage. Its life cycle initiates with a spore that is haploid and germinates into a protonema. A protonema is a thallus-like structure and is grown on a stable surface like damp soil, concrete, or tree bark. The protonema further grows into a gametophore which differentiates into leaves and stems.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Bryophytes

Keywords:

Bryophytes, mosses, liverworts, hornworts, haploid, stems, leaves, protonema, gametophores, sporophytes, spores, non-vascular plants, vascular tissue system, xylem tracheids.

Setler [38]2 years ago

4 0

Mosses were one of the first plants to even evolve.

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The frequency of chirps increases as the temperature increases. The correct option is B. The chirps occur closer together as the temperature increases.

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<h2>Available data:</h2>

<h3>Data recorded by the student </h3>

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In this experiment the student recorded the time in seconds between chirps.

We can see that as the temperature increases, in general, the time between chirps decreases.

At 21ºC the time between chirps is 2.5 seconds

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According to this information, if the average time between chirps decreases with the temperature increase, we can assume that the frequency of chirps increases as the temperature gets higher.

<h3>Options,</h3>

A) The higher the temperature, the fewer chirps there will be in 10 seconds.

Wrong. The number of chirps in 10 seconds will depend, not only on the frequency but also on how long the chirps last. Since the student did not record the time of chirps, we can not make this conclusion.

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D) There is no relationship between temperature and the time between chirps.

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Graphs usually explain the relationship between variables. In this example, the relationship would be inverse.

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<h3>About metallothionein 2A.</h3>

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