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Natasha_Volkova [10]
2 years ago
9

Write any four salient features of plants.

Biology
1 answer:
xeze [42]2 years ago
5 0
<h3>1) Write any four salient features of plants.</h3>

= The four salient features of plants are :

i) Most of the plants appears green due to the present of chlorophyll...

ii) Most of the plants are made up of eukaryotic cells...

iii) Their cells contain cell wall which is made up of cellulose....

iv) Most of the plants are multicellular.....

<h3>2) Write difference between flowering and non-flowerling plants.</h3>

= The differences between flowering and non - flowering plants are :

<h3 /><h3>Flowering plants </h3>

i) All flowering plants are green...

ii) Flowering plants produce flowers and seeds ...

iii) All flowering plants are multicellular..

iv) Flowering plants are more developed.

Examples: Cyas, pine ,pea, rose etc

<h3>Non-flowering plants </h3>

i) Non-flowering plants may be green or non green...

ii) Non-flowering plants do not produce flowers and seeds...

iii) Non-flowering plants may be unicellular or multicellular...

iv) Non-flowering plants are less developed.

Examples : Spirogyra, mushroom , moss etc..

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Forty mothers have taken the suspected drug during their pregnancies. of these mothers, 35 have delivered malformed infants. in
olasank [31]

The complete question is :

As an epidemiologist you are going to investigate the effect of a drug suspected of causing malformations in newborn infants when the drug in question is taken by pregnant women during the course of their pregnancies. As your sample you will use the next 200 single births occurring in a given hospital. For each birth a medication history will be taken from the new mother and from her doctor; in addition, you will review medical records to verify use of the drug. [N.B.: These mothers are considered to have been followed prospectively during the entire course of their pregnancies, because a complete and accurate record of drug use was maintained during pregnancy.] The resultant data are: Forty mothers have taken the suspected drug during their pregnancies. Of these mothers, 35 have delivered malformed infants. In addition, 10 other infants are born with malfunctions. What is the relative risk between exposure to the drug and malformations?

Answer:

14

Explanation:

  • The relative risk is a measure that is used to calculate or compare the likelihood or the chance that an event would occur while comparing the two groups.
  • To calculate the relative risk, the probability of an event occurring in one group is compared with the probability of the event occurring in another group and this is done by dividing the probability of one group by another.
  • The value of relative risk is always either zero or greater than zero but it cannot be negative.
  • The value 1 indicates neutrality.
  • The probability of an event = no. of favorable outcomes/ total no. of outcomes
  • For the given question, 35 mothers out of 40 delivered infants that were malformed, so the probability of delivering malformed infants is 35/40.
  • Out of the 200 births, 40 have occurred so total births left is 200 - 40 = 160
  • Therefore, the probability of the second event is 10/160.
  • Therefore relative risk is = (35/40)/(10/160) = (0.875/0.062) = 14
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4 years ago
Why must males inherit colorblindness or hemophilia from their mothers?
sdas [7]
Men must inherit colorblindness or hemophilia from their mothers because colorblindness and hemophilia are located on the X chromosome, which are inherited from their mother.
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What is the Valency of an Element / Radical?
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Symbol O
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Answer:

The answer is 21.04 million years

Explanation:

Hope it helps plz give me brainlist :)

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