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lyudmila [28]
3 years ago
13

Why pollen is important in fertilization?

Biology
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:

pollen is important in fertilization because pollen carries male gamete and it helps in transportation of male gamete during fertilization in mainly gymnosperms and angiosperms.

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Plants are the basis of nearly all ecosystems on Earth because they carry out the process of photosynthesis. Plants harvest ligh
Daniel [21]

Answer:

Trophic level

Consumer

Producer

Explanation:

All living organisms require energy for their life processes, which they obtain by taken in food. In an ecosystem, this food is derived when organisms feed on each other. This process that eventually leads to a flow of energy within organisms is called FOOD CHAIN.

A food chain or food web always begins with a unique set of organisms called PRODUCERS. Producers are autotrophs capable of harvesting light energy from the sun and use it to produce their food (chemical) in a process called PHOTOSYNTHESIS. Other organisms called HETEROTROPHS feed on these producers to derive energy. In ecology, they are called CONSUMERS. Other consumers feed on the previous ones also to get energy.

Hence, each step of the food chain is occupied by organisms that obtain and store energy by feeding on another organism. This step is called TROPHIC LEVEL.

In a nutshell, a PRODUCER (usually plants) starts the food chain/web due to its photosynthetic ability. This producer gets eaten by an organism called CONSUMER and in the process, the energy and nutrient stored in the producers flows to the consumer. Another consumers feeds on the previous one and the energy keeps flowing. Each step of the food chain occupied by an organism that stores and transfers this energy is called TROPHIC LEVEL.

4 0
3 years ago
Which is a role of photosystem l in the light reactions?
OlgaM077 [116]
B . to supply energy for splitting the water molecules
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Oxygen has six electrons in its outer shell. As a result, oxygen can form up to _____ bonds with other elements.
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The answer is 2 bonds
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What two factors must be present in the bacteria's environment for you to see the green color?
leonid [27]
<span>The sugar arabinose in the agarose plate is needed to turn on the expression of the GFP (green flourescent protein)  gene. The UV light is required to cause the GFP (green flourescent protein) protein within the bacteria to glow.</span>
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The first estimate of the age of our planet was that of:
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It was from darwin  he was the 1
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