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Orlov [11]
2 years ago
15

Why are there holes in the ends of phloem tubes?

Biology
1 answer:
Diano4ka-milaya [45]2 years ago
5 0

There are holes in the end of the phloem tubes because Phloem consists of sieve tube cells and companion cells for conduction of food These sieve elements are placed end to end . At the the junction of two sieve elements there is a plate called sieve plates having circular pores.

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The data above represent the results of three different crosses involving the inheritance of a gene that determines whether a ce
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Answer:

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Explanation:

The mechanism for inheritance of gene is the condition, in which the mutation when happens in one allele and cause the effect in the relevant phenotype. Similar inheritance will also be seen when the mutated allele will produce new type of the protein which will have deletorious effect on the normal function of the cell. In case of the single gene, autosomal dominant, autosomal recessive, X-linked dominant, X- linked recessive and mitochondrial are modes of inheritance.

4 0
4 years ago
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