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Which of the following statemetns is/are...

Which of the following statemetns is/are true?
I. Trimerous condition of floral whorl is characteristic of dicotyledons.
II. Adiantum is also called walking fern.
III. In gymnosperms the vascular system consists of xylem without vessels and phloem without companion cells.
IV. Riccia and Marchantia are liverworts.

A

II and IV

B

II, III and IV

C

I and III

D

Only IV

Text Solution

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The correct Answer is:
B
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Which of the following statements are true/false? (a) Trimerous condition of floral whorl is characteristic of dicotyledons. (b) Adiantum is also called walking fem. ( c) In gymnosperms, the vascular system consists of xylem without vessels and phloem without companion cells.

Which of the following statements are true for guinea worm ? I. Dignestic parasite whose intermediate host is Cyclops. II. It causes elephantiasis III.It is also called fiery serpent. IV. Digentic parasite whose intermediate host is female Culex mosquito.

Read the following statements and select the correct ones. (i). Phloem parenchyma is absent in most monocots. (ii). Gymnosperms lack tracheids and vessel. (iii). Gymnosperms lack companion cells.

Read the following statements about xylem elements. Which ones are true? I. The gymnosperms lack xylem vessels, instead they possess tracheids. II. Xylem parenchyma is involved in upward movement of water. III. Tyloses occurs in xylem fibers.

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Which of the following statements regarding single cell protein are true? I. It contains high quality fat and low protein content. II. Fusarium graminearum is a yeast that produces SCP. III. It reduces pressure on agricultural production system. IV. Spirulina is a cyanobacteria which produces SCP.

Which of the following statements are correct? I. In amphicribral vascular bundle, xylem lying in centre is surrounded by a ring of phloem. II. In amphivasal vascular bundle, phloem lying in centre is surrounded by xylem. III. In amphivasal vascular bundle, xylem lying in centre is surrounded by phloem. IV. In amphicribral vascular bundle, phloem lying in centre is surrounded by ring of xylem.

ARIHANT NEET-PLANTAE-Chapter Exercises (B Medical entrances special format questions)(Statement based questions)
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