Tag: plant kingdom

Questions Related to plant kingdom

Choose the correct answers from the alternatives given.
The perisperm is the remaining

types of endosperms plant kingdom biology

  1. nucellus

  2. endosperm

  3. female gametophyte

  4. integument

Show answer
Correct Option: A
Explanation:
Perisperm nutritive tissue of seed derived from the nucellus and deposited externally to the embryo sac distinguished from the endosperm. A layer of nutritive tissue in the seed of certain flowering plants that are derived from the nucellus and surrounds the embryo. In seeds of some plants remnants of nucellus is persistent. This residual, persistent nucellus is called perisperm.
So, the correct option is, 'nucellus'.

The gametophyte of  Bryophytes reproduction sexually by Isogamy Physiological anisogamy

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. Isogamy

  2. Physiological anisogamy

  3. Siphanogamous oogamy

  4. Zooidogamous oogamy

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Correct Option: A

Arange the following division in the correct sequence of the progressive evolution in their haploid phase (Gametophyte)
I) Thallophyta
II) Bryophyta
III) Pteridophyta 
IV) Spermatophta

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. $IV,III,I,II$

  2. $IV,III,II,I$

  3. $IV,II,III,I$

  4. $II,I,III,IV$

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Correct Option: A

The gametophyte is always dioecious in 

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. All pteridophytes

  2. Gymnosperms only

  3. Angiosperms

  4. All spermatophytes

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Correct Option: A

Zygote does not undergo immediate reduction division in all, except :

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. Gymnosperms

  2. Pteridophytes

  3. Bryophytes

  4. Angiosperms

Show answer
Correct Option: C
Explanation:

Answer is option C i.e. "Bryophytes"
The zygote does not undergo meiosis immediately in bryophytes to form the sporophyte (a multi-cellular body). Some cells of the sporophyte undergo meiosis to form haploid spores. Spores further germinate to produce the gametophyte.

Choose the correct statement:

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. bryophytes can live in soil but are dependent on water for sexual reproduction

  2. sex organ in bryophytes are unicellular

  3. Main plant body in bryophytes are gametophytes , differentiated into true root , stem and leaves

  4. Common examples of liverworts is Polytrichum

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Correct Option: A

The term prothallus is used for

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. Stage before thallus

  2. Plant body without differentiation of stem.leaves and roots

  3. Reduced gametophyte

  4. Reduced sporophyte

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Correct Option: C

Opening of floral buds into flowers, is a type of:

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. Autonomic movement of growth

  2. Autonomic movement of locomotion

  3. Autonomic movement of variation

  4. Paratonic movement of growth

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Correct Option: A

Consider the following four statements whether they are correct or wrong
(A)The sporophyte in liverworts is more elaborate than that in mosses
(B)Salvinia is heterosporous
(C)The Life-cycle in all seed-bearing plants is diplontic
(D) In Pinus male and female cones are borne on different trees
 The two wrong statements together are

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. Statements (A) and (C)

  2. Statements(A) and (D)

  3. Statements(B) and (C)

  4. Statements (A) and (B)

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Correct Option: B

What are chromosome number in the following respectively (i) Synergid of Gossypium (ii) Leaf cells in Allium (iii) Endosperm of Saccharum.

biology plant kingdom alternation of generation in angiosperms alternation of generation angiosperms

  1. $48, 16, 36$

  2. $52, 26, 32$

  3. $26, 16, 120$

  4. $48, 96, 24$

Show answer
Correct Option: C