CBSE > Class 11 > Biology | CBSE Board | Homework Help

it is the type of the porifera class it has the two flagelaas it has the many kinds of clors like red blue etc.it relase the toxins which is harmful for the aquatic animals

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what is the blud

Posted by Preety Sarma 7 years, 4 months ago

CBSE > Class 11 > Biology

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Visceral hump

Posted by Prema Pawar 7 years, 4 months ago

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What is metamerism

Posted by Mohit Kumar 7 years, 4 months ago

CBSE > Class 11 > Biology

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Diploblastic triploblastic explain

Posted by Sakshi Marthe 7 years, 4 months ago

CBSE > Class 11 > Biology

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Jagadeesh S M 7 years, 4 months ago

Diplomatic condition : two embryonic layers or two primary germ layers are present . Ex : porifera , coelentrata Triploblastic conditions : three embryonic germ layers are present . Ex : platyhelminthes to chordata

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Salient features of protista

Posted by Ajay Kumar 7 years, 4 months ago

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Definition for rhizoids

Posted by Mohan Raaj 7 years, 4 months ago

CBSE > Class 11 > Biology

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Ritu Thapliyal 7 years, 4 months ago

Filamentous outgrowth or root hair in some lower plants absorb water & nutrients from the soil

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Define protista and its types

Posted by Att Mehmi 7 years, 4 months ago

CBSE > Class 11 > Biology

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Aryan Chauhan 7 years, 4 months ago

Protista is unicellular,prokaryotic,microscopic. It is inter related with other kingdom example: Decomposer like bacteria(algae) , heterotroph like Animalia(protozoan protista) and autotrophic like plantae ( slime mould) . It reproduce asexually by binnary fision and sexually by cellfision and zygotformation. Protista (1) photo synthetic autotroph a: chrysophytes (phytoplankton) b: dinoflagellated c: euglenoid (2) saprophytic a: slimemould ex: dictyostellium (3) protozoan a: Amoeboid b: flagellated c: cilliated d: sporozoan

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Ritu Thapliyal 7 years, 4 months ago

Types of protista are chrysophytes, dinoflagellates, slime moulds, euglenoids and protozoan

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Ritu Thapliyal 7 years, 4 months ago

Kingdom protista is a group of all single celled animals

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What is pericycle...??

Posted by Smreeti Biswas🤙🏻 7 years, 4 months ago

CBSE > Class 11 > Biology

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How rootless plant absorb water and minerals ?

Posted by Gauransh Baranwal 7 years, 4 months ago

CBSE > Class 11 > Biology

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Which show Maximum rate of transpiration monocot or dicot

Posted by Amrit Kaur 7 years, 4 months ago

CBSE > Class 11 > Biology

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Reproduction

Posted by Arbindo Ch 7 years, 4 months ago

CBSE > Class 11 > Biology

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Smreeti Biswas🤙🏻 7 years, 4 months ago

Process of producing offsprings...

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How does nucleoid differ from a nucleus

Posted by Neha Yadav 7 years, 4 months ago

CBSE > Class 11 > Biology

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Meghna Thapar 5 years, 4 months ago

The nucleus is the largest and the most important cell organelle in a eukaryotic cell. A nucleus is a membrane-bound organelle that houses the genetic material of eukaryotes in DNA. The nucleus consists of protein fibres or the DNA inside chromatin fibres. Nucleoids contain the genetic material of prokaryotes in the cytoplasm. The nucleoids usually consist of a single chromosome.

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How the meristematic tissues are classified based on their location?

Posted by Arbindo Ch 7 years, 4 months ago

CBSE > Class 11 > Biology

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Sajid Ali 7 years, 4 months ago

Meristemetic tissues are classified in 3 types- 1.Apical meristems 2.Intercallary meristem 3.Lateral meristem

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Lipids is not a macromolecule than why it is considered so

Posted by Rishit Nautiyal 7 years, 4 months ago

CBSE > Class 11 > Biology

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Shreesha Bharadwaj 7 years, 4 months ago

Because It is insoluble in water and cannot be converted to simple fastly

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In Plant Kingdom what is Level Of Oraganisation?

Posted by Aftab Alam 7 years, 4 months ago

CBSE > Class 11 > Biology

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Meghna Thapar 5 years, 4 months ago

Plants (and animals, and fungi and some other organisms) are eukaryotes, so they all fall within the eukaryote domain. When we talk about plant classification, we can still use phylum and family and so on because these are categories within the eukaryote domain. Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae.

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What is cambium?

Posted by Ritu Thapliyal 7 years, 4 months ago

CBSE > Class 11 > Biology

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Divya Sanjay Singh 7 years, 4 months ago

Cambiym ring is present in conjoined closedvascular bundle. It is responsible for secondry growth in dicot plant

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Nishita Tomar 7 years, 4 months ago

Secondary grwoth in dicotyledonous plants hapeens because of cambium

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Ritu Thapliyal 7 years, 4 months ago

Ans plz

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Tortoise having shell on their body surface, so why they can not be counted as in phylum mollusca?

Posted by Saiyed Tanu 7 years, 4 months ago

CBSE > Class 11 > Biology

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Meghna Thapar 5 years, 4 months ago

There are three layers in the shell of P. fucata: the outer periostracum layer, the middle prismatic layer and the inner nacreous layer. Mollusk shells are made of a chalky material called calcium carbonate. The shell has three layers for extra strength: a tough outer layer, a chalky middle layer, and a shiny inner layer, next to the animal's skin. The shiny layer in some bivalve mollusks is known as mother-of-pearl.

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Nutrition in fungi

Posted by Rahul Pal 7 years, 4 months ago

CBSE > Class 11 > Biology

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Ayush Kumar Singh 7 years, 4 months ago

Saprophytic

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Why. Aseptate hypha are multinucleated? From ch 2

Posted by Ashish Singh 7 years, 4 months ago

CBSE > Class 11 > Biology

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Meghna Thapar 5 years, 4 months ago

Coenocytic hyphae are multinucleated cells. The bodies of fungi are made of a mass of branching hyphae and are called mycelia. Often the body of fungi is not noticed until it forms a fruiting body. A hypha consists of one or more cells surrounded by a tubular cell wall. ... The major structural polymer in fungal cell walls is typically chitin, in contrast to plants and oomycetes that have cellulosic cell walls. Some fungi have aseptate hyphae, meaning their hyphae are not partitioned by septa.

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Alternation of generations

Posted by Mohit Singh 7 years, 4 months ago

CBSE > Class 11 > Biology

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What is key ? In first chapter of bio.

Posted by Aniya Pal 7 years, 4 months ago

CBSE > Class 11 > Biology

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What are best topics for written projects as assingment in class 11th biology

Posted by Jaffar Hussain 5 years, 9 months ago

CBSE > Class 11 > Biology

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Aniya Pal 7 years, 4 months ago

On TAXONOMICAL AIDS because it is simple and vary simple to make it attractive .

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What is the importance of CATALOGUE in taxonomy?

Posted by Kirtik Biswas 7 years, 4 months ago

CBSE > Class 11 > Biology

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What is cell theory

Posted by Lakshit Vaishnav 7 years, 4 months ago

CBSE > Class 11 > Biology

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Meghna Thapar 5 years, 4 months ago

Cell theory states that living things are composed of one or more cells, that the cell is the basic unit of life, and that cells arise from existing cells.

Cell theory states that: