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velikii [3]
3 years ago
8

Bryophytes never formed forests (mats, yes, but not forests) because ________. a. they possess flagellated sperms.

Biology
1 answer:
maria [59]3 years ago
8 0

Answer:

c. They lack lignified vascular tissue

Explanation:

We know that forest consists of tall trees. In the tall trees the water and minerals are transported to the every part of tree through the lignified vasucular tissue. This tissue not only helps in transport within the tree but also provides some sort of mechanical strength due to the presence of lignin it its walls. On the other hand bryophytes are non-vascular plants which means they lack vascular tissue and thus a mechanism for long distnace transport of water and minerals is absent in them. So they can't be taller as a tree and thus can't form forest.

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Atropine is sometimes used to dilate the pupil for an eye examination. which receptor would atropine block?
grigory [225]

Atropine would block the receptor called muscarinic acetylcholine receptors present in the eye.

Atropine is the Anticholinergic agent which is also known as parasympatholytics. The activity of neurotransmitters at the receptors leads to pupil constriction.

Atropine is used to block these receptors that allow the pupillary muscles to relax. This causes the dilation of the pupil.

Atropine is the mydriatics that is used for pupillary dilation to conduct a detailed examination of eye diseases.

without this medication, the pupil will only dilate in the darkness. However, doctors cannot examine the eye problems as there is darkness as they need light for checkups.

If you need to learn more about Atropine, click here:

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7 0
1 year ago
Week 11 discussion forum-Ecogenetics is a branch of genetics that deals with the genetic variation that underlies reactive diffe
timurjin [86]

Explanation:

(a) Silicosis is a situation in which the person work in stone grinding industries, they tend to inhale the crystalline silica dust, which is also a part of sand and rock. It affects the human lungs and can cause lung fibrosis.

(b) Benzoates, Nitrates, sulphites are the food preservatives chemicals which are used mostly in food preparation so that it can be stored for long period. These chemicals are harmful for human and can cause disease in the human. They can cause severe asthma in humans. The international agency for the research of cancer has reviewed ingested nitrates and nitrites are probably carcinogenic to humans.

(c) Industrial pollution cause water and soil pollution. Industrial pollution is the release of wastes and pollutants generated by the industrial activities into the natural environmental including air, water and sand. It causes chronic health problems. Polluted air cause lung related issue and polluted water causes abdominal pain, diarrhea in humans  

8 0
3 years ago
Which statement correctly compares mass and weight?
hram777 [196]

Answer:

D. Weight varies with location, but mass does not vary

Explanation:

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, the weight of an object is given by the formula;

Weight = mg

Where;

  • m is the mass of the object.
  • g is the acceleration due to gravity.

Mass can be defined as a measure of the amount of matter an object or a body comprises of. The standard unit of measurement of the mass of an object or a body is kilograms.

Irrespective of the location of an object or a body at a given moment in time, the mass (amount of matter that they're made up of) is constant. This ultimately implies that, whether you're in the moon, space, earth or any other place, your mass remains the same (constant).

<em>Hence, the statement that correctly compares mass and weight is that, weight varies with location, but mass does not vary. This is simply because acceleration due to gravity changes with location i.e its value varies with the planets.</em>

5 0
3 years ago
When water runs through or over rocks containing soluble minerals, it dissolves small amounts of the minerals and carries them a
gogolik [260]

Answer:

true

Explanation:

7 0
3 years ago
In addition to sunlight, what two substances are required for the start of photosynthesis?
ira [324]

You need water and oxygen

4 0
3 years ago
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