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Ierofanga [76]
3 years ago
11

3. Which structure protects the developing embryo of a beech tree?

Biology
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

Seed Coat

Explanation:

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Explain why some traits cannot be easily changed even though they are heritable
Marta_Voda [28]
Traits heritable only if the similarity arises from shared genotypes
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3 years ago
What is an example of something that exist in natural systems?
k0ka [10]

Answer:

hope you like it

Explanation:

Examples of natural systems include: real number system, solar system, and planetary atmosphere circulation systems.

Natural physical systems include the solar system and an animal's digestive system. Human-made physical systems include mechanical systems, optical systems, electrical systems, and combinations of these. The names of these systems come from the type of energy they use.

5 0
3 years ago
Two solutions will be prepared with the mixture of distilled water and stock solution of KMnO4 (10 mM). Give the correct volumes
Yanka [14]

Answer:

See the answer below

Explanation:

<em>Recall that the law of dilution states that the number of moles before dilution must be equal to the number of moles after dilution.</em>

Mathematically,

     molarity x number of moles before dilution = molarity x number of moles after dilution.

For solution A: final molarity = 3 mM, final volume = 2mL, initial molarity of KMnO4 = 10 mM

Applying the equation:

    10 x initial volume = 3 x 2

        initial volume = 6/10 = 0.6

<u>Hence, Tube A should be made with 0.6 mL of 10 mM KMnO4 stock and  1.4 mL of distilled water to give a solution of 2 mL 3 mM KMnO4.</u>

For solution B:final molarity = 8 mM, final volume = 2 mL, initial molarity = 10 mM

    10 x initial volume = 8 x 2

       initial volume = 16/10 = 1.6

<u>Hence, Tube B should be made with 1.6 mL of 10 mM KMnO4 stock and 0.4 mL of distilled water to give a solution of 2 mL 8mM KMnO4. </u>

7 0
3 years ago
Which of the following best describes how plants obtain the materials necessary to perform photosynthesis?
Lerok [7]

Answer:The raw materials required for the process of photosynthesis are carbon dioxide, water and solar energy.

The carbon dioxide present in the atmosphere diffuses into the leaf through stomata.

Water is obtained from the plant roots.

Solar energy is obtained from the sun which gets trapped by the chlorophyll pigment present in the leaves.

Explanation:

6 0
3 years ago
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Why does fertilization in the seedless plants require water?
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Because water helps plants grow
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