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3 years ago

Which of the following functions do roots perform?

Biology

2 answers:

bixtya [17]3 years ago

8 0

Answer: A. absorb water and nutrients from the soil

Explanation:

In vascular plants, the roots is the organ which typically lies below the under the surface of earth crust. But roots can also be aerial that means there are roots which grows above the ground or typically above the surface of water. The roots perform three main functions in plants that are:

1. They anchor the plant body to the ground, and provides it a support.

2. They absorbs and conducts water and minerals from the soil.

3. They performs vegetative reproduction.

On the basis of the above description, A. absorb water and nutrients from the soil. is the correct option.

givi [52]3 years ago

6 0

I think the correct answer from the choices listed above is option A. The function that roots perform is to absorb water and nutrients from the soil. It is from the soil that plants obtain the needed amount of water and nutrients and without the roots these will die because it is through the roots these substances are able to go in the plant.

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What is the total amount of Vit B in 100g Milo powder

Alexandra [31]

Answer:

3.6 µg of Vitamin B12, 2.3mg of Vitamin B6, 30.1mg of Niacin B3, 1.8mg of Vitamin B2

Explanation:

Total amount of Vitamin B in 100 grams of Milo powder contains 3.6 µg of Vitamin B12, 2.3mg of Vitamin B6, 30.1mg of Niacin B3, 1.8mg of Vitamin B2. In milo powder, almost all types of vitamin B are present which make it good for our health. This milo powder also contains 54mg Vitamin C, 594mg of Calcium and 21.8mg of Iron so the total amount of Vitamin B is more about 34.2 mg.

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3 years ago

What type of species has an

solniwko [45]

Answer:

I think it would be C

Explanation:

Invasive species can cause a lot of problems and have a big impact on the ecosystem.

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3 years ago

Wich part of a cell contains the genetic material and controls all the activities in the cell

german

The nucleus is the part of the cell, or organelle, that contains the genetic material and controls the cell's movement. It consists of the genetic material, the nucleoleus, and the nuclear membrane.

Nucleus- the nucleus controls all of the cells activities, including how the cell grows,develops,and divides.

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3 years ago

Please Hurry). The Science of Biology: Question 1: Explain how sunlight is the primary source of energy for your own life? Quest

docker41 [41]

Answer:

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3 years ago

Read 2 more answers

How does the malfunction of ion channels causes cystic fibrosis

gtnhenbr [62]

Answer:

Ion channel dysfunction

1) altered Cl- secretion in submucous glands,

2) increased Na+ absorption and consequent electrolytes hyperabsorption in the superficial epithelium.

Explanation:

The normal function of the CFTR protein is to transport Cl- ions as it works a chlorine channel regulated by AMPc and by protein kinase K (PKA). CFTR is also a regulator for other ionic channels.

The CFTR protein expresses in the luminal portion of the secretory and absorptive epithelial membranes. It has a significant role in the secretion of electrolytes activated by AMPc and intracellular calcium. This protein constitutes the way out of Cl- from the lumen. CFTR protein also regulates electrolyte function. It inhibits the epithelial Na+ channel of absorptive epithelial cells from the colon and aerial vias. It also activates the Na+ channel in sudoriparous ducts.

Given that defects in the CFTR protein take to a defective regulation in the Na+ channel, cystic fibrosis characterizes by alterations in electrolytes secretions and absorption. There are two significant physiopathological mechanisms:

1) altered Cl- secretion in submucous glands,

2) increased Na+ absorption and consequent electrolytes hyperabsorption in the superficial epithelium.

Patients with cystic fibrosis are incapable of increasing their secretory transport. Three events impede the higher osmotic transepithelial gradient:

the increased epithelial conductance to Na+ in apical membranes,
the paracellular permeability to Cl- and
high permeability to water.

This leads to hyperabsorption in the patient epitheliums. The superficial liquid layer in the aerial vias decreases, mucous glands are not released from the mucus, and the mucociliary clearance is strongly altered in aerial vias.

8 0

3 years ago