How do sieve tubes elements group to make sieve tubes

Biology

1 answer:

kumpel [21]3 years ago

3 0

sieve tube elements are the cells of phloem which allow transportation of photosynthates through phloem...
how sieve tube elements form sieve tubes:
sieve tube elements are connected end to end and form a long chain which is called sieve tube,,,,
sieve tube elements are connected with the help of a side chain with the help of peptide bond...also one element has tapering end which easily overlaps with other end of next element to form sieve tube,,,,

You might be interested in

How can sedimentary rock show earths history

alexdok [17]

they have fossils and pieces of the environment from the past inside of them

8 0

2 years ago

Read 2 more answers

¿a que llamamos uniones químicas?

Charra [1.4K]

Answer:

enlace iónico.

Explanation:

5 0

2 years ago

A child was exposed to a disease-causing virus (most likely chicken pox from the Varicella zoster virus) when he was 5 years old

STatiana [176]

Answer: What is expected to happen is that the secondary immune system acts immediately against the virus.

Explanation:

When a virus first enters our body, in order to defend itself, the body must first recognize what the antigen is in order to fight it through antibodies. Once it does it will keep a memory of it that it can use if this virus enters the body again. This will be done through the secondary immune system.

As the body already recognizes the antigen, it knows how to fight it immediately, generating a thousand times the amount of antibodies generated the first time.

Thanks to its memory cells, the virus will remain much less time in the body.

8 0

2 years ago

The fertilization of ovules from Plant Q by pollen from Plant R results in the production of seeds. What percent of the genes in

blagie [28]

Answer:

The correct answer is - option A. 0%

Explanation:

The zygote formation or fertilization in flowering plants occurs by the fusion of pollen of one plant with the ovum of another plant of the same species normally. This process includes the exchange of an equal amount of the genetic contribution from both plants.

The egg cell of the mother is responsible for the mitochondria and chloroplast of the progeny so the percentage of chloroplast genes provided via Plant R is 0% as ovum and egg cell comes from only plant Q.

percentage of chloroplast gene inherited from R plant is a)0%

3 0

2 years ago

Which of the following types of electromagnetic radiation has the lowest frequency?

Ann [662]

Answer:

D Microwaves

Explanation:

It has an electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm)

3 0

2 years ago