28. Plant nutrient molecules with a negative charge are readily lost from the so

Question

28. Plant nutrient molecules with a negative charge are readily lost from the soil through leaching because: a. they bind strongly to soil particles which are themselves washed away by rain b. they will not bind to plant root hairs. c. they will increase the pH of the soil in which they occur d. they cannot easily bind to negatively charged soil particles. 29. In the insect excretory system, a. water and nutrients are filtered from the hemolymph (the blood) while the rest of the b. waste products are pumped actively into the Malpighian tubule, while water and nutrients are c. waste products plus water and nutrients move into the hindgut, with final extraction of waste d. waste products plus water and nutrients move into the Malpighian tubule, with final extraction hemolymph with the waste products is excreted from the hindgut. pumped into the hindgut. products taking place in the Malpighian tubule. of water and nutrients taking place in the hindgut

Explanation / Answer

28. Negetively charged soil particles can't bind the negetively changed nutrints and these are leached away. Option D is correct.

29. Waste and nutrients are transferred to malpighian tubules and extractory product are mixed with feces in hindgut. Option D is correct.

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