What type of tissue connects all parts of a plant allowing for nutrients and water to flow throughthe plant?

1 answer:

3 0

The tissue you are referring to here is the xylem, a vascular tissue, whose basic function is to transport water and nutrients from the roots to the rest of the plant.

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You have been growing some animal cells in a test tube. The cells grow for several days, then do not appear to grow as well. You

svetlana [45]

Answer:

D. There is no enough oxygen in the culture fluid

Explanation:

The cells in the test tube need to carryout one of the important metabolic processes of living organisms - respiration. The process involves the breakdown of glucose to generate energy for other metabolic processes in the cell.

Respiration can be carried out in the presence of oxygen (aerobic) or in the absence of oxygen (anaerobic). Human cells are primarily aerobic but can carryout respiration anaerobically in the presence of inadequate oxygen.

For aerobic respiration, glucose is broken down in the presence of oxygen to produce carbon-dioxide, water and energy in the form of ATP:

$C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP$

In the absence of oxygen, the glucose becomes converted to lactic acid and a smaller amount of ATP is produced as compared to aerobic respiration.

Hence, lactic acid gradually builds up in the absence of oxygen due to anaerobic respiration.

The correct option is D.

6 0

2 years ago

Read 2 more answers

Which is the first step in the life cycle of a plant that reproduces sexually?

nalin [4]

It starts with a seed, than when the seed is on the ground it germinates.

5 0

2 years ago

What situation is an example of artifical selection

ss7ja [257]

Answer:

An example situation of artificial selection is "More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory".

Explanation:

The process of breeding animals to acquire the desired characteristics by the external means other than natural selection and behavior of animal itself is called as artificial selection.

The first artificial selection was carried out by Darwin when he mated penguins that would have a higher chance of breeding.

The practice of artificial selection was existing in human civilization a long time ago.

This process was used to use wild animals and domestic animals in battles and other household works.

3 0

3 years ago

A cell that has relatively few energy needs would probably have a relatively small number of __________.

Vanyuwa [196]

I think the right answer is A

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3 years ago

What is a frameshift mutation? What is the cause of this type of mutation?

nika2105 [10]

A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation causedby indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three.

7 0

2 years ago