<span>
Wind dispersion of reproductive cells allowed in seedplants to colonize
land away from water supplies. If water is needed to
passively transport gametes to each other and protect them from desiccation
plants were limited to densely inhabited space near water sources.
Bryophytes & ferns (seedless) are dependent on moist environments
for reproduction but the first seed plants developed an alternate
delivery system allowing independence from water- assisted reproduction.
Conifers produce pollen that can survive by carrying water and
nutrients along. Wind can now carry these male gametophytes to female
gametophytes under the scales of a cone. Fertilization produced a
diploid seed. The seed is protected and can survive dry conditions for a
period of time before growing. Pollen and seeds transferred a conifer’s
water dependence for their reproduction to wind dependence. </span>
Answer:
The nurse should administer 2 ml each day
Explanation:
According to the prescription, <em><u>12 mg of betamethasone</u></em> should be given daily for three days.
The prescription also says that betamethasone comes in 6 mg/mL per vial. Therefore, to give 12 mg of betamethasone, 2 vials (each vial having 1 ml) of betamethasone must be administered by the nurse.
The forest A which is near to the village will be saved by the local volunteers and hence suffers less damage as compared to forest B which was far away. Both the forest will go under secondary succession.
<h3>What is Ecological Succession?</h3>
Ecological succession is the process of changes in the species structure of an ecological community over time. The time scale for a succession to take place can be decades or more or less.
Succession begins with a relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable as a climax community.
The reason of succession is the cause of ecosystem change. It is the impact of established organisms upon their environments.
Succession is of two types: Primary Succession and Secondary Succession. When succession takes place on a bare rock then it is called primary succession as no species ever existed on that rock. However, when a forest catches fire the succession is secondary as species once existed on that place which were destroyed.
The time for secondary succession is less than the primary succession. The forest A which was near to the village will be saved by the local volunteers and hence it suffers less damage as compared to forest B which was far away.
Learn more about Succession here:
brainly.com/question/13015656
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Explanation:
5. The larger the cell, the harder it is to get nutrients and gases to move in and out of the cell.
6.Small
7.Small, as they have a higher surface area to volume ratio which allows them to rely on oxygen and material diffusing into the cell to survive.
8.Prokaryotic cells have internal folding of cell membrane which is responsible for certain functions like respiration.
And in Eukaryotic are compartmentalised which is a method to increase surface area.
The shrinking of a plant cell membrane away from the cell wall when placed in a hypertonic solution is called a plasmolysis... I don't know if that can be of any help :)
