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Plants perform
photosynthesis. They use the
sunlight, that provides them with energy, and take the carbon dioxide from the atmosphere.
The main role of
chloroplasts is to conduct photosynthesis.
They have
chlorophyll, which is a green pigment that captures the energy from sunlight.
Photosynthesis is a way for them to make their own food (
sugars), necessary for them to stay alive and to produce oxygen. Both will be needed for their
cellular respiration, a process that occurs in the
mitochondria, and will produce energy, in the form of
ATP, and CO2.
The carbon dioxide that they produced can be used for doing photosynthesis.
Answer: Option A and B.
Archaea and bacteria are prokaryote and reproduce by binary fission.
Explanation:
Archaea are grouped of single celled organisms that have no cell nuclei. They are prokaryotes and reproduce by binary fission. They were formally grouped as bacteria with the name archaeabacteria but the classification is outmolded. They are now renamed as archaea bacteria as they are closely related to eukaryotes.
Bacteria also are single celled, microscopic organisms. They are prokaryotes and they reproduce by binary fission. They have are number of shapes ranging from spheres to rods.
Ans. 'Reproduction.'
Skin cells are somatic cells or normal body cells that show mitotic cell division. These cells die and are lost daily, even without any damage or injury. Our body makes continuously new skin cells to replace died skin cells. Thus, the purpose of cell cycle for skin cells to replenish lost cells is reproduction.
Thus, the correct answer is option). reproduction.
Answer:
Option A, accumulate sulfur as intracellular granules.
Explanation:
Purple sulfur bacteria belong to the group of Proteobacteria. These probacterias are anaerobic in nature and yet are able to photosynthesise. They are usually found in water environments such as hot springs, stagnant water etc. They use sulphur (either in the form of sulfide, or thiosulfate) as an electron donor in their photosynthetic activity to oxidise sulfur thereby producing granules of elemental sulfur.
while filamentous sulfur oxidizers use nitrate instead of oxygen to oxidize sulfide thereby producing granules.
Hence, option A is correct.
The answer is C.
A very high magnitude star is difficult to see from Earth. That’s because it is very far away. A star that far away won’t be able to radiate heat like those that are closer to Earth.