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NEET - Grade 12 - Biology - Microbes in Human Welfare - Introduction and Snapshot of Microbes in Human Welfare - Study ref# 965

Introduction: Besides macroscopic plants and animals, microbes are the major components of biological systems in this earth. You have studied about the diversity of living organisms in Class XI. Do you remember which Kingdoms among the... read more

NEET - Grade 11 - Biology - Biological Classification - Importance and Snapshot of Biological Classification - Study ref# 740

Introduction: Since the dawn of civilization, there have been many attempts to classify living organisms. It was done instinctively not using criteria that were scientific but borne out of a need to use organisms for our own use – for ... read more

NEET - Grade 11 - Biology - Biological Classification - Importance and Snapshot of Biological Classification - Study ref# 741

Following sections must be covered to understand the Biological Classification: 1. Kingdom Monera 2. Kingdom Protista 3. Kingdom Fungi 4. Kingdom Plantae 5. Kingdom Animalia 6. Viruses, Viroids and Lichens... read more

NEET - Grade 11 - Biology - Animal Kingdom - Importance and Snapshot of Animal Kingdom - Study ref# 746

Introduction: When you look around, you will observe different animals with different structures and forms. As over a million species of animals have been described till now, the need for classification becomes all the more important. ... read more

NEET - Grade 11 - Biology - Animal Kingdom - Importance and Snapshot of Animal Kingdom - Study ref# 747

Following sections must be covered to understand the Animal Kingdom: 1. Basis of Classification 2. Classification of Animals... read more

NEET - Grade 11 - Biology - Animal Kingdom - Target Setup for Animal Kingdom - Study ref# 748

Student requires to achieve the following milestones to get better grip over Animal Kingdom. The milestones / targets are as follows:Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000%Subjec... read more

NEET - Grade 11 - Biology - Excretory Products and their Elimination - Importance and Snapshot of Excretory Product and their Elimination - Study ref# 791

Introduction: Animals accumulate ammonia, urea, uric acid, carbon dioxide, water and ions like , phosphate, sulphate, etc., either by metabolic activities or by other means like excess ingestion. These substances have to be remove... read more

NEET - Grade 11 - Biology - The Living World - Study ref# 3440

What is a phylum? Answer: A primary division of a kingdom, as of the animal kingdom, ranking next above a class in size.... read more

NEET - Grade 11 - Biology - Biological Classification - Study ref# 3474

What was the criteria of five Kingdom classifications? Name the Kingdoms and write down three important features of each Kingdom with examples. Answer: The main criteria for classification used by R.H. Whittaker in his five Kingdom classification sys... read more

NEET - Grade 11 - Biology - Biological Classification - Study ref# 3477

Name three members of the Kingdom Protista and briefly explain their characteristic features. Answer: Three members of Kingdom Protista are described below:Chrysophytes – These are single celled eukaryotes found in fresh water as well as marine en... read more

NEET - Grade 11 - Biology - Biological Classification - Study ref# 3492

Write two key features of kingdom protista? Answer: They lack tissue organization which is mainly observe in eukaryotic organisms viz. fungi, plants and animals. They mainly contain well defined nucleus and some membrane bound organelles. Some may co... read more

NEET - Grade 11 - Biology - Plant Kingdom - Study ref# 3536

What is algae? Where are they found? What are the various forms and sizes of algae? Answer: Algae are chlorophyll containing autophytic members of the division thallophytic comprising large assemblage of comparatively simple plants of different forms... read more

NEET - Grade 11 - Biology - Plant Kingdom - Study ref# 3537

How do algae multiply? What are the three types of fusion? Define each. How are algae beneficial? Answer: The algae reproduction by:–Vegetative method, asexual method and sexual method.Vegetative reproduction - In this method new plants are produc... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3712

What is mesoglea? Answer: Mesoglea is the clear, inert, jelly-like substance that makes up most of the bodies of jellyfish, comb jellies and certain primitive sea creatures in the phylum Cnidarians and sponges. It acts as the creatures structural sup... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3713

What is meant by cephalization? Answer: Cephalization is an evolutionary trend, whereby nervous tissue, over many generations, becomes concentrated toward one end of an organism. This process eventually produces a head region with sensory organs. Cep... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3714

What is notochord? Answer: The notochord is a flexible, rod-shaped body found in embryos of all chordates. It is composed of cells derived from the mesoderm and defining the primitive axis of the embryo. In lower vertebrates, it persists throughout l... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3715

Name two non chordate phyla where animals are radially symmetrical? Answer: Animals in the phyla Cnidaria and Echinodermata exhibit radial symmetry.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3716

Name two diploblastic eumetazoan phyla? Answer: Animals in the phyla Cnidaria and Ctenophora are diploblastic eumetazoan.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3717

Write the scientific name of the fresh water sponge? Answer: Spongilla sp is the scientific name of the fresh water sponge. ... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3718

Name the cells that line the spongocoel in Sycon sp? Answer: Spongocoel is lined with choanocytes, which have flagella that push water through the spongocoel, creating a current.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3719

Name the type of digestion shown by members of Porifera? Answer: Sponges feed by intracellular digestion where the breakdown of food happens inside of individual cells. The choanocytes, also called collar cells, are cells specialized for feeding.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3720

What is the skeleton of Poriferans made of? Answer: As a whole, poriferans have diverse skeletal elements including calcareous laminae, organic filaments, and siliceous and calcareous spicules.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3721

What is the term given to the asexually reproducing phase of certain cnidarians? Answer: Asexual reproduction via budding is common among cnidaria . The polyp forms are the asexual stage.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3722

Name the opening of the gastro vascular cavity in cnidarians? Answer: The gastrovascular cavity has a single opening which serves as both mouth and anus, which is often surrounded by tentacles (Enteron).... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3723

Write the scientific name of jelly fish? Answer: Aurelia sp... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3724

Name one cnidaria that has both polyp and medusa ? Answer: Typical hydroids pass through both polyp and medusa phases in their life cycle.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3725

What are sea walnuts ? Which phylum they belongs to? Answer: Sea walnuts belong to the phylum Ctenophora, they are commonly known as comb jelly.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3726

What is bioluminescence? Answer: Bioluminescence is the production and emission of light by a living organism as the result of a chemical reaction during which chemical energy is converted to light energy It is generated by an enzyme-catalyzed chemol... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3727

What are flat worms? Answer: Flat worms are flattened dorso-ventrally from top to bottom so they can live a parasitic life.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3728

Name the anterior end of the of the tape worm where hooks and suckers are present? Answer: The anterior end of the tape worm is known as scolex.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3729

What is the function of parapodia? Answer: Polycheates use parapodia in combination with muscles and a segmented body plan for locomotion The parapodia may be modified into paddle-like structures to facilitate swimming or to ventilate tube shafts.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3730

How respiration is carried out in annelids? Answer: Respiration in annelids occurs primarily through their moist skin, although certain species have evolved specialized gills or use paired projections called parapodia in gas exchange. Annelids use th... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3731

What are the names of excretory organs of the insects and crustaceans? Answer: The excretory organs of insects are malpighian tubules. They collect water and uric acid from surrounding hemolymph (blood). Two different excretory organs are found in th... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3732

What is radula? Answer: Radula is the scientific name for the toothed chitinous ribbon in the mouth of gastropods. They use it to graze and scrape diatoms and other microscopic algae off rock surfaces and other substrata. A flexible tongue like organ... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3733

Why are urochordates are called tunicate? Answer: The soft body is surrounded by a thick test, or tunic, often transparent or translucent and varying in consistency from gelatinous to leathery. The tunic (for which the tunicates are named) is secrete... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3734

How do urochordates differ from Protochordates with reference to notochord? Answer: In cephalochordates the notochord extends from the head region to the tail region and persists through out life. But in case of urochordates the notochord is restrict... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3735

Name the larva of urochordates and cyclostomates? Answer: Urochordates have tadpole larva and the cyclostomates have ammocoete larva.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3736

Name the classes of vertebrates where heart is two chamber? Answer: The class chondricthyes and osteichthyes are the two classes where two chamber heart is present.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3737

Why do cartilaginous fishes have to swim constantly? Answer: They have to swim constantly as they lack swim bladder or they will sink.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3738

Name the class of fish where tail fin is Heterocercal and fertilization is internal? Answer: The chondricthyes are the class of fish where the tail fin is Heterocercal and the fertilization is internal.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3739

Name the class of animal whose skin is dry and covered with scutes? Answer: Class reptilia constitutes animals whose skin is dry and covered with scutes.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3740

Name the reptile which has only four chambered heart? Answer: Crocodile is the only reptile whose heart is four chambered.... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3741

Write four differences between cnidaria and ctenophora? Answer: Differences between Ctenophora and Cnidaria: read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3770

Which chondrichthyes have operculum? What are the difference between Osteichthyes and chondrichthyes? Answer: Chimaera monstrosa fish present in the Holocephali sub – class have operculum. Chimaera is called a ratfish.The difference between Osteichth... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3771

State the name of excretory organ in cockroach. What is porocyte and choanocyte? State the function. What is neotany? Answer: The excretory organs in cockroach are malpighian tubules. It areas near the function of the midgut and hind gut, there are n... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3772

Mention how the names Porifera and ctenophore derived. Give examples of each. Name the phylum where the following structures are present:- a) Stomadium b) Nemotocyst c) Choanocyte d) organ of Jacobson. Answer: The name Porifera refers to the porou... read more

NEET - Grade 11 - Biology - Animal Kingdom - Study ref# 3773

Write about the salient features of the classes:- reptilian and aves. Give example of each class. Answer: The salient features of class reptilian are:a) Body covered by horny epidermal seales.b) Limbs when present provided with digits terminati... read more

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