Correct Option Is b. light energy to chemical energy.
The energy conversion of light energy to chemical energy, known as photosynthesis, occurs in plant cells but not in animal cells.
The energy conversion that takes place in plant cells but never in animal cells is the conversion of light energy to chemical energy. This critical process is called photosynthesis.
During photosynthesis, plants absorb light energy, usually from the sun, and transform it into chemical energy stored in the form of glucose or other sugars. This chemical energy is then used by the plant for growth and development.
On the other hand, animal cells do not have the capability to carry out photosynthesis because they lack the necessary organelle, chloroplasts, and pigments required for absorbing light energy.
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B) they are having a positive impact on the environment by acting as decomposers.
C) they are having a negative impact on the environment by acting as decomposers.
D) they are having a predatory impact on the environment by acting as decomposers.
The correct answer is option B) i.e. they are having a positive impact on the environment by acting as decomposers.
By acting as decomposers beetles are helping in recycling of nutrients between biotic (organisms) and abiotic factors (enviroment). So, it may be considered as positive impact on the environment. Decomposers play a very important role in food chains and food webs. They breakdown biomolecules and liberate the micronutrients and micronutrients as inorganic molecules back to the environment. These inorganic molecules are used by plants once again to synthesize biomolecules. This is how nutrient cycle operates with the help of decomposers. For example, protein molecules of dead and decaying matter are broken down by decomposers to liberate nitrogen gas to the environment which is utilized by leguminous plants to make protein molecules again.
Meiosis and meiosis both starts with one cell, meiosis ends with four and mitosis with two.
Mitosis produces new cells for growth and repair, meiosis produces gametes.
Mitosis goes through cytokinesis once, meiosis goes through cytokinesis twice.
Cross over happens in meiosis, but not in mitosis.
Cross over happens in meiosis, but not in mitosis Mitosis makes genetically identical copies; meiosis does not