Tag: pictorial feature of plant kingdom

Questions Related to pictorial feature of plant kingdom

Which one of the following is a correct statement?

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Pteridophyte gametophyte has a protonemal and leafy stage

  2. In gymnosperms female gametophyte is free-living

  3. Antheridiophores and archegoniophores are present in pteridophytes

  4. Origin of seed habit can be traced in pteridophytes

Show answer
Correct Option: A

The most primitive vascular plants are ___________.

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Cycas

  2. Ferns

  3. Moss

  4. Brown algae

Show answer
Correct Option: B
Explanation:

Most premitive vascular plants are pteridophytes.
Cycas belongs to gymnosperms. Gymnosperms have a well-differentiated plant body with vascular tissues. They produce naked seeds. Hence, option A is incorrect. 
Moss belongs to bryophytes. Bryophytes have a well-differentiated plant body with stem and leaf-like structures. But there is no specialized vascular or mechanical tissue. Therefore, option C is incorrect. 
Brown algae belong to thallophytes. Thallophytes do not have well-differentiated plant body and vascular tissues. Therefore, option D is incorrect. 
Ferns belong to pteridophytes. Pteridophytes have a well-differentiated plant body with vascular tissues. Therefore, option B is correct. 

Strobilanthes kunthiana flowers once in

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. $5\ years$

  2. $12\ years$

  3. $20\ years$

  4. $50\ years$

Show answer
Correct Option: B
Explanation:

Strobilanthes kunthiana (Neelakurinji) flower once in $12\ years$, its juvenile phase is very long. The last time this plant flowered during September-October $2006$. It is found in hilly area of Kerala, Karnataka and Tamil Nadu and attracts a large number of tourists due to mass flowering.

So, the correct answer is '12 years'.

Which of the following is a vessel less angiosperm?
biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Tetracentron

  2. Trochodendron

  3. Wintera

  4. All of these

Show answer
Correct Option: D
Explanation:

Vessel less angiosperms are: 

(i) Tetracentron
(ii) Trochodendron
(iii) Wintera
So, the correct answer is (d).

Strobilanthes kunthiana differs from bamboo in

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Being monocarpic

  2. Length of juvenile phase

  3. Being polycarpic

  4. None of these

Show answer
Correct Option: B
Explanation:

Bamboo can be monocarpic or polycarpic whereas Strobilanthes kunthiana is a monocarpic plant. The juvenile phase of bamboo can vary from 3-120 years and the juvenile phase of Strobilanthes kunthiana can vary from 8-16 years.

So, the correct option is 'Length of juvenile phase'. 

In angiosperms various stages of reductional division can best be studied in _____.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Young anthers

  2. Mature anthers

  3. Mature ovules

  4. Endosperm cells

Show answer
Correct Option: A
Explanation:

Meiosis takes place in reproductive organs of plants and young anthers are the best material to study meiosis.

Select the mismatched pair.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Smallest angiosperm - Rafflesia

  2. Tallest angiosperm - Eucalyptus regnans

  3. Marine angiosperms - Zostera, Thalassia

  4. Angiosperm with smallest seed - Orchid 

Show answer
Correct Option: A
Explanation:

Smallest angiosperm is Wolffia microscopici, while Rafflesia arnoldii is the parasitic plant with the world's largest flower.

So the correct option is A.

Vessels and companion cells are characteristics of

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Angiosperm

  2. Gymnosperm

  3. Pteridophyta

  4. Fern

Show answer
Correct Option: A
Explanation:

A xylem vessel is a characteristic feature of an angiosperm and help in transportation of water. When it comes to transportation of food, it is the phloem that transports food materials from the leaves to the other parts. Sieve tube elements, companion cells, phloem parenchyma are the different components of the phloem. The sieve tube elements are arranged longitudinally with the companion cells and the pressure gradient in them is maintained by the companion cells

So, the correct answer is 'Angiosperm'

Naked seeds are present in 

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Angiosperms

  2. Gymnosperms

  3. Spermatophyta

  4. None of the above

Show answer
Correct Option: B

The smallest angiosperm is

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Mistletoe

  2. Rafflesia

  3. Wolfiella

  4. Wolffia

Show answer
Correct Option: D
Explanation:

A. Mistletoe is a common name for obligate hemiparasitic plants of order santalales. For example, Viscum species etc. It grows as tangled stem mass which can be upto 5 feet.

B. Rafflesia bears the largest flowers in the plant kingdom.
C. Wolfiella is a small aquatic angiosperm which is around 10 mm.
D. Wolffia is the smallest angiosperm which is less than 2 mm in measurement.
So, the correct answer is 'Wolffia'.