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Tasya [4]
2 years ago
10

HELP PLEASE !!!!

Biology
1 answer:
victus00 [196]2 years ago
6 0

Explanation:

Frequency and dominance are the same thing. A dominant allele always has the highest frequency. A dominant allele usually has the highest frequency.

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The primary function of the respiratory system is to supply blood with oxygen
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Please help!
Gala2k [10]

Tundra and deserts are two biomes of the world which represent the extreme form of climates. Tudra is the coldest region of the earth while desert represent the hottest zones of the earth. But whats  the most common thing in these extreme zones is that they receive very less precipitation throughout the year (less than 25 cm).

Therefore, flora of the desert and Tundra have some special adaptations to survive without sufficient amount of water.

Let's see what are those:

  • Tundra:
  1. The height of plants growing in Tundra is very less like lesser than 1 foot. The short structure of the plants helps them to get more heat from the dark soil and helps to survive freezing. The short height lets them stay protected from harsh effects of cold or snow.
  2. The plants in tundra grow in groups or clumps that helps them in surviving the attacks of ice particles or snow balls. For example: lousewort and Arctic crocus.
  3. Some flora of tundra has ability to grow even in the complete lack of water for several years.This is because they have waxy layers that cover the leaves and store maximum water for the periods of no availability.
  4. Some plants have hair on the surface of stems that trap maximum heat and protect the plant from heat and extreme forms of wind. For example: Arctic crocus.
  • Desert
  • Desert plants not only have physiological but also morphological adaptations to survive heat stress and shortage of water. Their stems, roots and leaves are fleshy and help them to store water for a large period of time. For example: Cactus
  • Many desert plants like <em>xerophytic bromeliads</em> and <em>epiphytic orchids </em>contain a system alternate of photosynthesis called CAM (Crassulacean Acid Metabolism). This process helps the plant to open the stomata at night for exchange of gases and accumulate CO2. In day, stomata are closed and the CO2 is used for photosynthesis. This is an adaptation, because during night when temperature is low, CAM plants lose less water as compared to what normal plants lose during day.
  • Some plants have extremely large roots that absorb maximum water from soil and compensate the plant's loss of water due to heat. For example: Phreatophytes.
  • Some Perennial plants  have adapted the mechanism to stay in condition of rest or dormant during extreme heat. They get back to normal life when weather become a bit better.

 Hope it helps! :)



8 0
3 years ago
which of the following structures allow the cell membrane to be selectively permeable? select all that apply.
11111nata11111 [884]
Hospolipid bilayer, with some protein, is what makes the cell membrane selectively permeable.
7 0
2 years ago
Question 5: How would you describe the effect of a 1°C increase of temperature on the biodiversity of the
BlackZzzverrR [31]

Explanation:

In the given question, the graph and table have not been provided either they are found anywhere, therefore, the question has been answered on previous knowledge.

The species of Earth can adapt to their environment but adaptation in organisms can take a long time that is thousands to Lakh of years. But the rise in temperature is observed constantly past 200 years.

The species living in the tropics, equator and Poles are already adjusted for their thermal limit. If the average temperature of the planet will increase by 1°C then the number of individuals in the population will decrease. As the number of individuals will decrease, the number of population of species will decrease.

Due to this declination, the number of species can become extinct and therefore the process of increase in temperature and number of species that become extinct can be co-related.

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3 years ago
What are the possible outcomes of the following cross
velikii [3]

the answer would be B.

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