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Igoryamba
3 years ago
13

Why do insect-pollinated flowers have sticky/ spiky pollen​

Biology
1 answer:
Anit [1.1K]3 years ago
3 0

Answer:

Insect-pollinated flowers have sticky or spiky pollen grains to that they stick to the insect bodies [ so that when an insects visits another flower, the pollen grain will easily land on the stigma allowing pollination and fertilisation to take place ].

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Make a comparison between blood taken from an artery in the leg and blood taken from a vein in the leg.
Crank

Answer:

Blood taken from an artery in the leg is oxygenated while blood taken from a vein in the leg is deoxygenated.

7 0
3 years ago
State two ways in which endocrine glands and exocrine glands differ.
denis-greek [22]

Answer:

The two major differences lies in the function and support system.

Explanation:

The two major differences between an endocrine and an exocrine system are as follows –  

a) An endocrine system releases its produce (hormones) into the connective tissue i.e blood while the exocrine system releases hormones directly into the ducts so that it could reach the targeted tissue directly.  

For example – the Adrenal gland is an endocrine gland that secretes adrenaline directly into the blood. The salivary gland is an exocrine gland that releases its produce into the collecting duct leading to mouth. However, Pancreas is both endocrine and exocrine gland.

b) The endocrine system cannot work alone therefore it works in coordination with the nervous system to control actions and balance the body. However, the exocrine system works independently

.

5 0
3 years ago
How much electrons would an atom of 10 protons and 11 neutrons have?
Elina [12.6K]

Answer:

10 electrons

Explanation:

Normally you would assume the atom to be neutral, meaning the protons and electrons cancel each other, if nothing states the charge of the atom. So, there must be 10 electrons in order to cancel out the protons.

Hope this helped :]

4 0
3 years ago
If you could take all the dna out of your body would it fit on a plate?
ANEK [815]

No unless if you have a plate for kings, if you were to take all your DNA out of your body it would be just under 2 meters long.

4 0
3 years ago
The growth of a population of sparrows accelerates with each generation. the chances of dying are about the same for these sparr
Paladinen [302]

Answer:

Exponential growth and a type II survivorship curve

Explanation:

  • Firstly we need to understand what exponential growth is, it is the type of growth in which population of any specie increases at a tremendous rate, constantly. In this type of growth, the increase is an exponential function of time for example, 2 reproduce to form form, four to sixteen and so on.

Population survivorship curves are simply the graphs representing increase in population with respect to time. There are three types of population survivor ship curve, Type I, Type II and Type III.

  • <u>In Type II survivorship curve,</u><u> </u>there is a constant dying rate of individuals of population with respect to time.

Now lets come back towards question, where two characteristics of the population are mentioned,

  1. Exponential growth of a population of sparrows with each generation.
  2. Constant dying rate

<em>This clarifies that </em><u><em>Exponential growth and a type II survivorship curve</em></u><em> is the best option representing the said scenario.</em>

<em />

Hope it help!

8 0
3 years ago
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