Companion cells transport of photosynthetic products from producing cells in mature leaves to the sieve elements in the minor veins of the leaf. There are at least three different types of companion cells in the minor veins of mature, exporting leaves, All three cell types have dense cytoplasm and abundant mitochondria;

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#Question id: 7296

#Unit 5. Developmental Biology

some of the following statements regarding to this experiment are given below. Which of the following statements is incorrect?

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#Question id: 7297

#Unit 5. Developmental Biology

How is the ABC model for floral identity in Arabidopsis similar to the models for homeotic gene function derived from studies in Drosophila?

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#Question id: 7298

#Unit 5. Developmental Biology

In what way are the homeotic genes of flowering plants similar to those of Drosophila and other animals?

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#Question id: 7299

#Unit 5. Developmental Biology

Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?

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#Question id: 7301

#Unit 5. Developmental Biology

An Rajasthani hunter was worried about being attacked by grizzly tigers, so he left the lights in his cabin on all the time. Plants near the cabin flowered a month early. Which of the following best explains this?

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#Question id: 7302

#Unit 5. Developmental Biology

Match the following level of microRNAs in Arabidopsis (Column II and III) with their Phases (Column I)

Phases (Column I)	microRNAs (Column II)	Level of microRNAs (Column III)
A. Juvenile vegetative phase	i. miR156	a. Low
B. Adult vegetative phase	ii. miR172	b. High
C. Reproductive phase

Which of the following combination is correct?