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3 years ago

Energy in most ecosystems must flow through autotrophs because ______.

2 answers:

8 0

Energy in most ecosystems must flow through autotrophs because only autotrophs can convert solar energy in chemical energy.

Explanation:

This suggests that these are organisms which are entirely based on the Greek name self-producers that can produce complex organic materials by fixing together simple building blocks in their local situation. E.g plants on land. Photosynthesis in plants transforms solar energy into chemical energy using electrons and protons from water. The method of photosynthesis in plants involves a series of steps and reactions that use solar energy, water, and carbon dioxide to produce organic aggregates and oxygen.

melomori [17]3 years ago

5 0

The answer is A.only autotrophs can convert solar energy into chemical energy.

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Which statement accurately describes the energy needs for photosynthesis and cellular respiration?

zavuch27 [327]

Answer:

Explanation:

Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.

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3 years ago

Which of these is an environmental change that occurs rapidly?

den301095 [7]

It would be C.

because it would destroy an environment very very rapidly for anything in its path

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2 years ago

Read 2 more answers

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the fem

Sergio039 [100]

In this cross the trait of long tail fins is associated with the “Y” chromosome of the male.

Thus the alleles of the male are represented by XY” where X chromosome has no trait of long tails find

And the allels of the female are represented by XX, as they do not have long tail fins.

When these two are crossed , the following punnet square is produced

X Y”

X X X X Y”

The XX is the female while the XY” is the male offspring.

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3 years ago

Bony Fish (bass etc.) and marine mammals (like dolphins) evolved some similar adaptations for survival in aquatic environments.

xeze [42]

Answer:

Convergent evolution

Explanation:

Convergent evolution is a type of evolution of similar features and/or structures between organisms that are not phylogenetically related. This type of evolution is known to create analogous structures/organs that exhibit similar or the same functions but were not present in the last common ancestor of these taxa. An example of analogous structures (and therefore also of convergent evolution) are the wings of bats and of insects (e.g., butterflies). Conversely, divergent evolution is a type of evolution where species phylogenetically related, i.e., species that share a common ancestor, evolve and accumulate differences over time.

6 0

3 years ago

You perform the following dihybrid cross: A blaBx Ab/aB. The A and B genes control different traits. What phenotypic ratio would

Luda [366]

Answer:

Option-D

Explanation:

In the given question the genotype of parental allele is- AbaB X AbaB. The alleles formed will be- AB, Ab,aB, ab in which the crossover allele will be AB and ab.

1. Unlinked genes

Now of these alleles are unlinked then the alleles will assort independently of each other therefore performing the punnett square we will get dihybrid ratio as 9:3:3:1 in which

1. A_B_ are 9

2. aaB_ are 3

3. A_bb are-3

4. aabb- 1

Since the crossover allele are AB and ab therefore A_B_ are 9 and aabb- 1 represent recombinant genotype.

2. Linked genes

When the genes will be linked then chances of crossing over will be reduced as a result of which only two type of allele will be formed which are- Ab and aB and the recombinant frequency will become less.

Crossing these allele will form Aabb , AaBb , AaBb and aaBB genotypes. The recombinant ratio will decrease as A_B_ is 2 and aabb is not present.

Thus, option-4 which states that the unlinked ration is 9:3:3:1 and linked ratio is <9: >3: >3: <1 is correct.

7 0

3 years ago