All categories

1 year ago

In summers, the leaves of a potted plant droops when the soil becomes dry. Which cell organelle makes the leaves to droop?

Biology

2 answers:

Kipish [7]1 year ago

5 0

Answer:

4) Vacuole as it loses all the water

Explanation:

loris [4]1 year ago

5 0

4) vacuole as it loses water

You might be interested in

In a population of tomato plants mean fruit weight is 60 g and narrow-sense heritability (or realized heritability - h2) is 0.3.

Alla [95]

Answer:

The mean weight of the progeny is $66$ grams

Explanation:

Given -

Mean fruit weight of tomato plant (M1) $= 60$ g

Narrow sense heritability (h2) $= 0.3$ g

Mean weight of tomato plant selected for artificial selection (M0) $= 80$ g

$h_2 = \frac{M_2 - M_1}{M_0 - M_1}$

Substituting the given values in above equation, we get -

$0.3 = \frac{M_2 - 60}{80 -60} \\0.3 = \frac{M_2 -60}{20} \\6 = M_2 -60\\M_2 = 6 + 60\\M_2 = 66$

The mean weight of the progeny is $66$ grams

5 0

2 years ago

When humans dig-up fossil fuels and burn them to power the modern world, carbon flows between which two reservoirs of the carbon

Luda [366]

Answer:

Explanation:

When humans dig-up fossil fuels and burn them to power the modern world, carbon flows between the Geosphere/lithosphere and the atmosphere.

Both the geosphere and the atmosphere represent important reservoirs of carbon. The digging-up of fossil fuels, otherwise known as exploration, is carried out in the geosphere or the lithosphere part of the earth. For example, crude oil is obtained deep from the ground. When the fuels are burned, they release carbon in the form of carbon dioxide into the atmosphere.

Hence, it can be concluded that carbon flows from the geosphere/lithosphere part of the earth to the atmospheric portion of the earth when fossil fuels are burned.

The correct option is B.

5 0

1 year ago

Which statements describe freshwater sources? Check all that apply.

vekshin1

"Rainwater can replace or replenish freshwater sources" and "precipitation, such as rainwater, is a source of freshwater on Earth" statements describe freshwater sources

Explanation:

Rainwater a source of pure distilled water, evaporated by the sun. When it falls it comes in contact of air and land. when ground soaks the water it becomes mineral water. And it is safe for drinking.

All the freshwater sources are result of precipitation from the earth surface,in various form i.e rain,mist,snow. Freshwater falling as rain have materials dissolved from atmosphere in it,sea and the land over which the clouds has travelled.

7 0

2 years ago

Read 2 more answers

If the length of the absolute refractory period in cardiac muscle cells was the same as it was for skeletal muscle ________.

melomori [17]

Tetanic contractions might happen, which would lead to the heart to stop pumping

7 0

2 years ago

In photosynthetic cells, synthesis of atp by the chemiosmotic mechanism occurs during _________.

NikAS [45]

In photosynthetic cells, synthesis of ATP by the chemi-osmotic mechanism occurs during photosynthesis and respiration. Plants can only achieve photosynthesis during the day and then respire during the night because photosynthesis requires the sun's energy to perform the necessary reaction to produce oxygen.

5 0

2 years ago