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Plant Kingdom · Question 39

AIPMT 2015 (Cancelled)MCQEasy📈 Topic in 38% papers+4−1
1

Which one of the following statements is wrong?

  1. Chlorella and Spirulina are used as space food.
  2. Mannitol is stored food in Rhodophyceae.
  3. Algin and carrageenan are products of algae.
  4. Agar-agar is obtained from Gelidium and Gracilaria.

Answer

(2) Mannitol is stored food in Rhodophyceae.

Solution

As per NCERT, the reserve food of Phaeophyceae (brown algae) is laminarin or mannitol, whereas the food in Rhodophyceae (red algae) is stored as floridean starch.

∴ "Mannitol is stored food in Rhodophyceae" is wrong.

⇒ Chlorella and Spirulina are unicellular, protein-rich algae used as food supplements, even by space travellers.

⇒ Algin (brown algae) and carrageen (red algae) are hydrocolloids obtained from algae.

⇒ Agar is obtained from Gelidium and Gracilaria.

Answer: (2)

AIPMT 2015 (Cancelled)

Keep practising — Plant Kingdom

2

In which of the following, gametophyte is not independent free living?

  1. Pteris
  2. Pinus
  3. Funaria
  4. Marchantia
AIPMT 2015 (Cancelled)
3

Read the following five statements (A to E) and select the option with all correct statements.

  1. A, D and E
  2. B, C and E
  3. A, C and D
  4. B, C and D
AIPMT 2015 (Cancelled)
4

Male gametes are flagellated in

  1. Ectocarpus
  2. Spirogyra
  3. Polysiphonia
  4. Anabaena.
AIPMT 2015 (Cancelled)
5

Which one of the following is wrong about Chara?

  1. Upper oogonium and lower round antheridium
  2. Globule and nucule present on the same plant
  3. Upper antheridium and lower oogonium
  4. Globule is male reproductive structure
AIPMT 2014
6

Which of the following is responsible for peat formation?

  1. Marchantia
  2. Riccia
  3. Funaria
  4. Sphagnum
AIPMT 2014
7

Male gametophyte with least number of cells is present in

  1. Pteris
  2. Funaria
  3. Lilium
  4. Pinus.
AIPMT 2014
8

Which one of the following shows isogamy with non-flagellated gametes?

  1. Sargassum
  2. Ectocarpus
  3. Ulothrix
  4. Spirogyra
AIPMT 2014
9

An alga which can be employed as food for human being is :

  1. Polysiphonia
  2. Chlorella
  3. Ulothrix
  4. Spirogyra
AIPMT 2014
10

Select the wrong statement

  1. In Oomycetes, female gamete is smaller and motile, while male gamete is larger and non-motile.
  2. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy.
  3. Isogametes are similar in structure, function and behaviour.
  4. Anisogametes differ either in structure, function or behaviour.
NEET 2013
11

Isogamous condition with non-flagellated gametes is found in

  1. Volvox
  2. Fucus
  3. Chlamydomonas
  4. Spirogyra.
NEET 2013

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