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attashe74 [19]
3 years ago
11

The veins of leaves are _____. i) composed of xylem and phloem ii) continuous with vascular bundles in the stem and roots iii) f

inely branched to be in close contact with photosynthesizing cells
Biology
1 answer:
raketka [301]3 years ago
5 0
Hey there :)

All the options you have given are applicable. 

Because xylem and phloem are essentials as they are the veins of the leaves. They are bundled together in thin strands. They allow the movement of water and nutrients. 

The veins of leaves are finely branched to be in close contact with photosynthesizing cells as they need to store food.


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3 years ago
What is an allele frequency determined by? The proportion of a genotype (i.e., AB) in a population The survival rates of individ
Zinaida [17]

Answer:

The proportion of a genotype (i.e., AB) in a population.

Explanation:

  • Every trait is controlled by some alleles and their combinations. Allele frequency determines the frequency of occurrence of a particular allele in a population.
  • It can be determined by genotype frequency or proportion of a particular genotype in a population. As a genotype is a result of various alleles coming together, its frequency can help us to calculate the allele frequency.
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4 years ago
Some animals generate two germ layers during gastrulation. They are called diploblasts. Other animals generate three germ layers
vova2212 [387]

Diploblastic blastopore - gastrovascular cavity

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Deuterostome blastopore - anus

Explanation:

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Diplolbastic (cnidarians) blastopores develop into the gastrovascular cavity in organisms like hydra

Triploblasts with three embryonic germ layers includes acoelomates, eucoelomates, and pseudocoelomates and the blastopores transform accordingly.

The blastopores of the triploblastic eucoelomates like the protosomes (mollusks, arthropods, annelids) transforms to the mouth, denoting ‘mouth first’; while that of the deuterostomes (chordates) transform to anus, denoting ‘mouth second’.

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3 years ago
What is the proper ethical role of science in public policy
Ugo [173]

The correct answer choice from the above statement about the proper ethical role of science in public policy is:

To refuse to testify on controversial issues

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<h3>What is scientific method </h3>

Scientific method refers to the systematic investigation of a particular phenomena through observations and experiment.

So therefore, the correct answer choice from the above statement about the proper ethical role of science in public policy is:

To refuse to testify on controversial issues

Learn more about scientific method:

brainly.com/question/17216882

#SPJ1

4 0
2 years ago
Please helppp!
Hunter-Best [27]
Well, I am not 100% sure but I would go with D.
7 0
4 years ago
Read 2 more answers
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