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Agam answered 1 year(s) ago

Compare the characteristics of Thallophyta, bryophyta and Pteridophyta.

  Thallophyta Bryophyta Pteridophyta Plant body is thallus. It is not differentiated into root, stem and leaves. Plant body does not have true roots, stems and leaves but shows root like and leaf-like stru...

Asked by Surya rao

Jan 31

  • 10 Answers
  • 18 Likes
  • 69607 Views
Sanalkumar commented 4 year(s) ago

What is protonema? What role does it play in the life cycle of Funaria?

Sol:
Gametophyte stage has two substages namely protonema and  leafy stage. 
a) Protonema: Protonema is a structure formed by germination of spores. This is termed to be primar...

Asked by Sanalkumar

Mar 19

  • 1 Answer
  • 1 Like
  • 8460 Views
Gaurav answered 4 year(s) , 8 month(s) ago

Please define me secondary protonima ? ( When it is produced and from where )

Protonema

in mosses, part of the gametophyte that develops from the spores (primary protonema) or from the rhizoids, stems, and leaves (secondary protonema). The protonemata of leafy mosses are shape

...

Asked by Rajat

Jul 20

  • 2 Answers
  • 0 Like
  • 6746 Views
Aruna kavitha answered 3 year(s) , 8 month(s) ago

Why does a moss plant requires water to complete its life cycle?

Sol:
Mosses are primitive plants belonging to Division Bryophyta which live in damp and shady places.
Mosses are primitive plants which do not possess all the structures that angiosperms do.Moss...

Asked by Adithyan

May 6

  • 1 Answer
  • 0 Like
  • 3339 Views
Aruna kavitha answered 3 year(s) , 7 month(s) ago

Draw a labelled diagram of human stomach and its parts.

Sol:
Stomach is a part of digestive system which is situated in the abdominal region.It mediates oesophagus and small intestine of the digestive tract. Stomach is divided into three regions namely, fund...

Asked by Adithyan

May 5

  • 1 Answer
  • 0 Like
  • 2401 Views
Sannan answered 4 year(s) , 6 month(s) ago

Why are bryophytes are called Amphibians of the plant kingdom

hello

Asked by Kasi

Mar 30

  • 3 Answers
  • 2 Likes
  • 1980 Views
Aruna kavitha answered 3 year(s) , 7 month(s) ago

List out the factors on which imbibition depends on.

Sol:
Imbibition is type of diffusion by which especially solids swell due to entry of water from the outside environment. Swelling of dry seeds is an example of imbibition.The substance that imbibes wat...

Asked by Adithyan

May 5

  • 1 Answer
  • 0 Like
  • 1682 Views
Aruna kavitha answered 4 year(s) , 5 month(s) ago

Ploidy, Bond in Polysaccharides

Sol:
Thank you for using LearnNext Q&A forum. For clear and prompt answering please post the questions separately.

1. Ploidy is the number of sets of chromosomesin a biological cell....

Asked by Sunny

Nov 6

  • 1 Answer
  • 0 Like
  • 1680 Views
Srini answered 3 year(s) , 8 month(s) ago

How many chromosomes do drones of honey bee possess? Name the type of cell division involved in the production of sperms by them.

Drones means male honey bees ,which contain 16 chromosomes, during gamete formation sperms produced by the cell division called mitosis.

Asked by Adithyan

May 6

  • 1 Answer
  • 0 Like
  • 1553 Views
Surya rao answered 4 year(s) ago

Angiosperm and Gymnosperm

The angiosperms and the gymnosperms are part of the kingdom of plants.  Angiosperms are generally considered as flowering plants while the gymnosperms are those that are known as the ancestors of angiosperms....

Asked by Kasi

Mar 30

  • 1 Answer
  • 0 Like
  • 1418 Views
Mary asked 3 year(s) , 9 month(s) ago

DISTINGUISH BETWEEN HAPLONTIC AND DIPLONTIC

No answers yet.Be the first to answer

Asked by Mary

Jun 25

  • 0 Answer
  • 0 Like
  • 1361 Views
Aruna kavitha answered 4 year(s) , 2 month(s) ago

What are the questions related to angiosperms?

Sol:

These are the possible important questions on angiosperms.
What are angiosperms? Explain.
Define the term angiosperms.
How do angiosperms differ from gymnosperms? <...

Asked by Rashmi

Jan 22

  • 1 Answer
  • 0 Like
  • 1209 Views
Agam answered 1 year(s) , 5 month(s) ago

Protonema and Prothallus

Protonema and prothallus are two structures of primitive plants. The main difference between protonema and prothallus is that protonema is the first stage of development of mosses and liverworts whereas prothal...

Asked by Saranya

Sep 30

  • 1 Answer
  • 0 Like
  • 1175 Views
Gaurav answered 4 year(s) , 8 month(s) ago

Why are brown algae brown?

 Brown Agale is Brown due to the presence of xanthophyll pigment in it...

Asked by Kasi

Mar 30

  • 2 Answers
  • 0 Like
  • 1127 Views
Anjali answered 2 year(s) ago

DISTINGUISH MICROPHYLL MACROPHYLL AND SPOROPHYLL

microphyll- a type of plant leaf with one single unbranched leaf vien e.g. in moss
macrophyll- leaf with more than one vein associated with a gap in central stele  Also called as megaphyll. e.g. gymnosp...

Asked by Mary

Jun 25

  • 1 Answer
  • 0 Like
  • 1100 Views
Gaurav answered 4 year(s) , 2 month(s) ago

Cytotaxonomy?

~~Cytotaxonomy is the branch of biology dealing with the relationships and classification of organisms using comparative studies of chromosomes.

Asked by Kasi

Mar 30

  • 2 Answers
  • 0 Like
  • 1005 Views
Mary asked 3 year(s) , 9 month(s) ago

ECONOMIC IMPORTANCE OF BRYOPHYTES

No answers yet.Be the first to answer

Asked by Mary

Jun 25

  • 0 Answer
  • 0 Like
  • 973 Views
Gaurav answered 4 year(s) , 8 month(s) ago

PLANT KINGDOM

Sol:
The largest bryophytes ever known are  Dawsonia species Fontinalis species.
Bryophytes are the plants which lack certain characteristics of higher plants. These include mosses and liverwort...

Asked by Fawaz

Jul 11

  • 2 Answers
  • 0 Like
  • 956 Views
Surya rao answered 4 year(s) ago

Liver worts

Liverworts are a group of small, mat-like, non-vascular plants that occur in diverse habitats such as banks of streams, marshy ground, damp soil, bark of trees, and deep in the woods. The plant body of liverwor...

Asked by Kasi

Mar 30

  • 1 Answer
  • 0 Like
  • 801 Views
Aruna kavitha answered 4 year(s) , 2 month(s) ago

What do you mean by diplontic?

Sol:
Ploidy is the number of sets of chromosomes in a biological cell. As per ploidy cells are divided into haploid cells and diploid cells.
*Diploid number is made up of two complete haploid se...

Asked by Rashmi

Jan 22

  • 1 Answer
  • 0 Like
  • 795 Views
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