Tag: biology

Questions Related to biology

Antherozoids of Marchantia are

biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. Short,curved and biflagellate

  2. Short,straight and multi flagellate

  3. Long, straight and biflagellate

  4. Long, curved and biflagellate.

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Correct Option: A

Match List-I with List-II and select the correct answer.

List-I List-II
a. Hornwort $1$. Lycopodium
b. Liverwort $2$. Ricciocarpus
c. Stonewort $3$. Anthoceros
d. Clubmoss $4$. Chara
biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. A-$2$, B-$3$, C-$4$, D-$1$

  2. A-$2$, B-$3$, C-$1$, D-$4$

  3. A-$3$, B-$2$, C-$1$, D-$4$

  4. A-$3$, B-$2$, C-$4$, D-$1$

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Correct Option: D
Explanation:
a. Hornwort - (3) Anthoceros (dependent Sporophyte is horn shaped)
b. Liverwort - (2) Ricciocarpus (has a single species under the genus, the thallus is lobed, is aquatic in habitat)
c. Stonewort - (4) Chara ( Green algae belonging to class Charophyceae, the accumulation and deposition of calcium carbonate, gives it a stone like appearance, hence, stoneworts)
d. Clubmoss - (1) Lycopodium (A Pteridophyte, belonging to family Lycopodiaceae and certain species are used for medicinal purpose).

Elaters are absent in ___________.

biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. Funaria

  2. Marc

  3. Pellia

  4. Porelia

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Correct Option: A

Consider the following statements: Mosses differ from liverworts in that their rhizoids are.
a. Brown
b. Multicellular
c. Obliquely spate.
c. Unbranched.
Of these statements.

biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. $2, 3$ and $4$ are correct

  2. $1, 2$ and $4$ are correct

  3. $1, 3$ and $4$ are correct

  4. $1, 2$ and $3$ are correct

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Correct Option: A

Match List-I with List-II and select the correct answer using the codes given the lists.

List-I(Organs) List-II(Functions)
a. Columella $1$. Dispersal
b. Elater $2$. Protection
c. Marsupium $3$. Reproduction
d. Gemma $4$. Decoration
$5$. Conduction
biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. A-$3$, B-$5$, C-$2$, D-$1$

  2. A-$5$, B-$1$, C-$4$, D-$3$

  3. A-$1$, B-$5$, C-$4$, D-$2$

  4. A-$5$, B-$1$, C-$2$, D-$3$

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Correct Option: A

Root epidermis is termed as

biology kingdom plantae classification of bryophytes types of bryophytes bryophyta

  1. $Rhizodermis$

  2. $Endothecium$

  3. $Casparian strip$

  4. $Bundle sheath$

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Correct Option: A

In moss, sporophyte is formed on

biology plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Antheridia

  2. Archegonium

  3. Prothallus

  4. Leafy stage

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Correct Option: A

Immature male gametophyte differs from a mature male gametophyte in that it.

biology plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Has not yet left pollen sac

  2. Has not yet germinated and its generative cell has not divided into two male gametes

  3. Is a microspore that has not yet divided by mitosis

  4. Still consists of microsporocyte

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Correct Option: B

The female sex organ in Riccia and Funaria is _____________.

biology plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. antheridium

  2. paraphysis

  3. archegonium

  4. oogonium

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Correct Option: C
Explanation:

The sex organs in bryophytes (Riccia, Funaria), are multicellular and jacketed. The jacket of the sterile cell around the sperm and egg is an adaptation to a life on land. The male reproductive organs are antheridia and female reproductive organs are archegonia.

So the correct option is B.

A sterile jacket around gametangia is found among _______________.

biology plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. bryophytes

  2. lichens

  3. algae

  4. fungi

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Correct Option: A
Explanation:

The sex organs in bryophytes {Riccia, Funaria), are multicellular and jacketed. The jacket of the sterile cell around the sperm and egg is an adaptation to a life on land. The male reproductive organs are antheridia and female reproductive organs are archegonia.

So the correct option is A.