20. Why are plants green A. they absorb only green wavelengths of ligh B. they a
ID: 206538 • Letter: 2
Question
20. Why are plants green A. they absorb only green wavelengths of ligh B. they absoeb cnly yellow and blue wavelengths of light C. they reflect nearly all wavelengths of light D. they reflect green wavelengths of light 21. What are the grana? A. the double membrane of the chioroplast B. a flattened disk or sae in the chloroplast C. a stack of thylakoid membrane structures D. the central fluid-filled space of the chloroplast Where do the light dependent reactions take place within the celf? A. stroma B. matrix 22. C. thylakoid membranes D. cytoplasm 23. Where do the light independent reactions (Calvin cycle) take place within the cell? A. stroma B. matrix C. thylakoid membranes D. eytoplasm 24. What is the correct equation for photosynthesis? B. CsHud, +60; + sunlight 6CO,+611,0 C. 600+6H0 +sunlight CH120+ 60 D. CO, +HCL+H0+sunlightC(H:0) +0 25. Minute pores in the leaves of plants that regulate the flow of gases to the interior of the leaf are called A. sporophytes B. stoma C. xylem D. phloem The Gel-like material between the nucleus and plasma membrane is considered the A. cytoplasm 26. cytosol C. cytogel D. cytomembrane The larger a cell becomes: A it's surface area to volume ratio decreases B. it's surface area to volume ratio increases C. it's surface area to volume does not change D. the less efficient it becomes at transporting nutrients across the membrane 27. DNA is usually found in an area of the cell in bacteria called A. nucleus B. nucleolus 28. nucleoid prokaryotes do not have DNA D.Explanation / Answer
Ans 20. (d) plants reflect green wavelengths of light.
Explaination:- Green light is not absorbed and hence is reflected back that is the reason that plabts appear green.
Ans 21. (c) the stack of thyllakoid membrance structures.
Explaination:- the grana are like a stack of disks present in the chloroplasts containing chlorophyll.
Ans 22. (c) thylakoid membranes
Ans 23. (a) stroma
Ans 24. (c) C6H12O6 is the product as this is the required and needed in the cell hence correct answer is option (c)
Ans 25. (b) Stoma.
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