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GrogVix [38]
3 years ago
5

What is epidermal tissue​

Biology
2 answers:
seraphim [82]3 years ago
6 0
The system that protects the inner tissue and reduces the rate of transpiration that helps in gaseous exchange due to the presence of stomata.
igomit [66]3 years ago
3 0

Epidermal tissue system is the outermost covering of plants. It consists of epidermis, stomata and epidermal outgrowths. Epidermis is generally composed of single layer of parenchymatous cells compactly arranged without intercellular spaces. But it is interrupted by stomata. In leaves some specialized cells which surround the stomata are called the guard cells.

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Why is a testcross necessary to determine genotype when an organism shows a dominant trait
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A dominant trait can be shown both when an organism is homozygous dominant AND heterozygous. Two different genotypes give the same visible result so a testcross is needed to be able to accurately say if the organism is homozygous dominant or heterozygous
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Evolutionary theory contends that genetic ___________ is necessary and beneficial for humanity when there is an environmental ch
Anni [7]

Answer:

variation

Explanation:

Genetic variation is what makes us all unique as a result of subtle changes in our DNA.  The Theory of Evolution is a process in which organisms change over time as a result of adapting to their environment.  Charles Darwin came up with the term Survival of the fittest, in any environment plants and animals from the same species show natural variation in their physical characteristics, like neck lengths in giraffes.  Darwin suggested that the plants and animals best suited to the environment will survive and pass on their characteristics to their offspring. Over time, the characteristics of the surviving members of the species will become predominant.

Example: Peppered moth

In London in the 1800's, 98% of peppered moths had light colored bodies and only 2% were dark.  The light moths were the same color as the trees so they could easily hide from hungry birds and not get eaten.  The dark moths however were easy to see and were eaten.  Then came the factories and smoke of the industrial evolution and many trees turned black with soot and suddenly the dark moths were able to survive better as they now looked like the trees and the light colored moths were easier to spot and eat.  By 1895 the dark peppered moths made up 95% of the population and the light colored moths only 5%.  This is an example of natural selection, because of the gene that makes the moths dark, it allowed them to flourish when the environment changed, they adapted, reproduced and survived.

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3 years ago
An environmental change is occurring due to continents shifting and moving to different parts of Earth’s surface. What kind of c
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Answer: B

Explanation:

8 0
2 years ago
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Why can a wolf be considered both a secondary consumer and a tertiary consumer
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A wolf can be considered as both a secondary and primary consumer because they feed on both primary and primary and secondary consumers. As a secondary consumer, wolves can feed on plant eaters [primary consumers] such as elk which is an herbivore. As a tertiary consumer, wolf feed on secondary consumers such as deer.

hope this answer is correct .....

7 0
3 years ago
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The most apparent difference between modern humans and Australopithecus africanus is that Australopithecus africanus
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Answer:

The correct answer is option d.

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An extinct species of australopithecine, that is, Australopithecus africanus was the first species to be illustrated. It was of gracile or slender build and was considered to have been the direct ancestor of modern humans. Like modern man, the A. africanus did stood upright and walked upright, and were having free hands to use. However, they were smaller in height and lighter in weight in comparison to modern man.

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