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3 years ago

Multiple Choice - the production of egg and sperm cells is necessary for sexual reproduction because

Biology

1 answer:

sp2606 [1]3 years ago

7 0

Answer:

D- It increases the number of developing offspring.

Sperm and egg are needed to make offspring, so the more that is produced, there will be more offspring.

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Primary growth or lengthening of plants results from mitotic division in cells of which tissue? A.Axillary buds B.Lateral merist

Anastaziya [24]

The correct answer is (b.) Lateral meristem. Primary growth or lengthening of plants results from a mitotic division in cells of a tissue, lateral meristem. This meristematic tissue are group of cells that has the ability to divide.

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3 years ago

The FAT CAT ATE THE RAT. Delete the first H and regroup the letters in groups of three- write out the new groups of three. Does

mote1985 [20]

FAT CAT ATE TER AT
the sentence does not make sense, it is an example of deletion mutation

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3 years ago

In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2

Alisiya [41]

Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

$r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

$r = \frac{1500 - 750}{1995 - 1985} = 750/10 = 75$

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

$r = \frac{D(1995) - D(1885)}{1995 - 1985} = \frac{6 pines/ha - 3pines/ha}{10} = 0.3 pines/ha$

So, on average, each year the number of pines per hectare increases by 0.3

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3 years ago

The destruction of salt marshes will directly harm each organism except _____. migratory birds deep ocean squid shellfish sparti

77julia77 [94]

Salt marshes are diverse ecosystems because there are resources from both

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3 years ago

Read 2 more answers

Why might you not see as much bacterial colonization of microbes from human saliva on plates cultured at 25oc versus plates incu

GREYUIT [131]

Bacteria need an optimum temperature for their growth, so this is the reason why we might not see as much bacterial colonization of microbes from human saliva on plates cultured at 25 °C versus plates incubated at 37 °C.

Why do bacteria only grow at certain temperatures?

The main justification for incubating bacterial cultures at various temperatures is that different temperatures favor the growth of particular bacteria.
Most infections and typical ambient bacteria are classified as mesophiles, which thrive in temperatures between 20 and 40 degrees Celsius.
An optimum temperature is required for the enzymes to show their activity, and for the division also many enzymes are involved in the process. So, the bacterial culture can be seen at a particular incubation temperature only.

To read more about bacterial colonization visit:

brainly.com/question/12485105

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1 year ago