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Phantasy [73]
3 years ago
7

Please help!!!! (Science)

Biology
1 answer:
tamaranim1 [39]3 years ago
6 0
Cone-bearing plants have two types of cones: female cones and male cones. ... A pollen tube then grows from the pollen grain toward the female ovule. Sperm cells move through the pollen tube and one of them fertilizes an egg cell, which then develops into a seed.

Hope this helps!!
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C₄ plants differ from C₃ and CAM plants in that C₄ plants _____. a. transfer fixed carbon dioxide to cells in which the Calvin c
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Answer:

The correct answer is -transfer fixed carbon dioxide to cells in which the Calvin cycle occurs

Explanation:

In C4 plants the light reaction and Calvin cycle occurs in two different cell that are mesophyll cell and bundle sheath cells. First, the CO₂ is fixed into 4- carbon oxaloacetate by an enzyme PEP carboxylase.  

Then this oxaloacetate is converted into a simpler form called malate. Malate molecule then enters into bundle sheet cell and there it releases one molecule of CO₂. This CO₂ enters the Calvin cycle which results in the sugar formation with the help of enzyme rubisco.

Therefore by releasing of CO₂ molecule by malate in bundle sheet cells, it transfer fixed carbon for the Calvin cycle to occur.

5 0
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Of what relevance is dna replication
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What percentage of the Earth’s rain forests have been lost to deforestation since 1950?
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The damp soil within a forest in which a mushroom grows is a...? Habitat ? Ecosystem? Community? Population?
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8 0
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