Samar shah – Activity – Forum

Samar shah

@samar-shah

Noble Member

Joined: Jun 14, 2021
Last seen: Jul 17, 2023

Topics: 0 / Replies: 2321

Answer to: In liverworts, mosses and ferns gametophytes are free-living 2. Gymnosperms and some ferns are heterosporous.

Correct answer: (4) Three

4 years ago

Forum

Biology

Answer to: Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?

Correct answer: (4) Algae-Methylase

4 years ago

Forum

Biology

Answer to: In angiosperms, functional megaspore develops into (1) endosperm (2) embryo sac (3) pollen sac (4) ovule

Correct answer: (2) embryo sac

4 years ago

Forum

Biology

Answer to: Cycas and Adiantum resemble each other in having:

Correct answer: (4) Motile Sperms

4 years ago

Forum

Biology

Answer to: Antheridiophores and archegoniophores are present in pteridophytes. (2) Pteridophyte gametophyte has a protonemal and leafy stage

(3) Origin of seed habit can be traced in pteridophytes

4 years ago

Forum

Biology

Answer to: Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses

(3) Multiplication by fragmentation

4 years ago

Forum

Biology

Answer to: In Equisetum the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo male gametophyte is not independent.

Correct answer: (2) Two

4 years ago

Forum

Biology

Answer to: Which one of the following has haplontic life cycle?

Correct answer: (4) Ustilago

4 years ago

Forum

Biology

Answer to: Which one of the following is a vascular cryptogam?

Correct answer: (3) Equisetum

4 years ago

Forum

Biology

Answer to: Male and female gametophytes are independent and free-living in:

Correct answer: (3) Sphagnum

4 years ago

Forum

Biology

Answer to: Algae have cell wall made up of:

(2) cellulose, galactians and mannans

4 years ago

Forum

Biology

Answer to: State one important use of CNG these days.

CNG is used as a fuel in transport vehicles.

4 years ago

Forum

Sources of Energy

Answer to: State two important uses of natural gas.

Uses of natural gas: (i) As a fuel in thermal power plants. (ii) As a fuel in transport vehicles.

4 years ago

Forum

Sources of Energy

Answer to: Name the component which is found in natural gas as well as in biogas.

Methane.

4 years ago

Forum

Sources of Energy

Answer to: What is the main constituent of : (i) petroleum gas? (ii) natural gas?

(i) Main constituent of petroleum gas is butane. (ii) Main constituent of natural gas is methane.

4 years ago

Forum

Sources of Energy

Answer to: Write the full form of: (i) LPG, and (ii) CNG.

(i) LPG - Liquified Petroleum Gas. (ii) CNG - Compressed Natural Gas.

4 years ago

Forum

Sources of Energy

Answer to: Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?

Compressed Natural Gas (CNG)

4 years ago

Forum

Sources of Energy

Answer to: What is the composition of liquefied petroleum gas (LPG)?

LPG consists mainly of butane, along with smaller amounts of propane and ethane.

4 years ago

Forum

Sources of Energy

Answer to: Name any four fractions obtained from petroleum which are used as fuels.

Fractions obtained from petroleum: Diesel, petrol, kerosene, petroleum gas etc.

4 years ago

Forum

Sources of Energy

Answer to: What are the various fuels which are used to generate electricity in a thermal power plant?

Forum

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