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Morphology of Flowering Plants · Question 57

AIPMT 2014MCQEasy📈 Topic in 75% papers+4−1
1

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

  1. vexillary
  2. imbricate
  3. twisted
  4. valvate.

Answer

(2) imbricate

Solution

As per NCERT, if the margins of sepals or petals overlap one another but not in any particular direction, as in Cassia and gulmohur, the aestivation is called imbricate.

∵ In twisted aestivation one margin overlaps the next in a regular direction; in valvate the whorls just touch without overlapping; vexillary is seen in pea and bean.

∴ The condition is imbricate.

Answer: (2)

AIPMT 2014

Keep practising — Morphology of Flowering Plants

2

Which one of the following statements is correct?

  1. The seed in grasses is not endospermic.
  2. Mango is a parthenocarpic fruit.
  3. A proteinaceous aleurone layer is present in maize grain.
  4. A sterile pistil is called a staminode.
AIPMT 2014
3

An example of edible underground stem is

  1. carrot
  2. groundnut
  3. sweet potato
  4. potato.
AIPMT 2014
4

An aggregate fruit is one which develops from

  1. multicarpellary syncarpous gynoecium
  2. multicarpellary apocarpous gynoecium
  3. complete inflorescence
  4. multicarpellary superior ovary.
AIPMT 2014
5

Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, Withania, potato, onion, aloe and tulip how many plants have hypogynous flower?

  1. Fifteen
  2. Eighteen
  3. Six
  4. Ten
NEET 2013
6

In China rose the flowers are

  1. zygomorphic, hypogynous with imbricate aestivation
  2. zygomorphic, epigynous with twisted aestivation
  3. actinomorphic, hypogynous with twisted aestivation
  4. actinomorphic, epigynous with valvate aestivation
NEET 2013
7

Seed coat is not thin, membranous in

  1. groundnut
  2. gram
  3. maize
  4. coconut.
NEET 2013
8

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation?

  1. Six
  2. Seven
  3. Eight
  4. Five
NEET 2013 (Karnataka)
9

Inflorescence is racemose in

  1. brinjal
  2. tulip
  3. aloe
  4. soybean.
NEET 2013 (Karnataka)
10

In a cymose inflorescence the main axis

  1. has unlimited growth
  2. bears a solitary flower
  3. has unlimited growth but lateral branches end in flowers
  4. terminates in a flower.
NEET 2013 (Karnataka)
11

How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (oleander) have opposite phyllotaxy?

  1. Three
  2. Four
  3. Five
  4. Two
NEET 2013 (Karnataka)

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