BIOLOGY 1 Marks Question

The animals in which the mouth is formed from blastopore are called Protostomia.

(i) Pisces, (ii) Tetrapoda.

Marsupium is found in Kangaroo or Macropus.

Octopus is known by the name of Devil fish

Symmetry is not found in Amoeba.

The cavity which is found between the body wall and the alimentary canal and which is lined by mesoderm, is called Coelom.

Kangaroo.

(i) Whale, (ii) Seal.

The scientific name of human is Homo sapiens.

(i) Ostrich, (ii) Kiwi.

Due to absence of eardrum in snakes, hearing is impaired.

Ornithorhynchus (Platypus).

The presence of pores and canal system in the body are the characteristics of phylum Porifera.

Animals that produce children are called viviparous.

The presence of mammary gland is the main characteristic of Mammals class.

The name of the bird which cannot fly is Ostrich.

Animals that move by crawling or sliding belong to the class Reptilia.

Mollusca is the second largest phylum in the animal world.

The feather-like gills found in animals of phylum Mollusca help in respiration and excretion.

In scorpion, respiration is done through book lungs.

Living fossil of Arthropoda phylum is Limulus (King crab).

Arthropoda, the largest phylum of the animal kingdom.

Nereis possess lateral appendages, parapodia, which help in swimming.

1. Osmosis control, 2. To aid in excretion.

Bioluminescence (the property of a living organism to emit light) is well-marked in ctenophores.

1. Cobra, 2. Krait.

Ichthyophis is a limbless amphibian.

In Urochordata, notochord is present only in larval tail.

Subphyla Urochordata and Cephalochordata are generally called Protochordata.

Sea-fan (Gorgonia) belong to the phylum Coelenterata.

Circulation is not found in animals of the phylum Ctenophora.

The alimentary canal, urinary bladder and reproductive tract open into a chamber called cloaca.

Rudimentary structure found in the collar region of Hemichordata is called stomochord which is similar to the notochord.

The northern sea lily is known as Antedon.

Bilateral symmetry is found in the larvae of Echinodermata.

Common name of Aplysia is sea hare.

Ctenophore is generally called sea walnut or called skeleton jelly (comb jelly).

The frog found on trees is called Hyla.

The endoskeleton of fishes of Osteichthyes class are bony.

Animals which do not have the ability to control body temperature are called poikilothermous animals.

Mollusca.

(1) Apis (bee), (2) Bombyx (silk moth).

All the insects of the world come under the phylum Arthropoda.

In earthworms the excretion process is accomplished with the help of nephridia.

The animals of Aschelminthes are circular in cross section, hence they are called roundworms.

The body of animals of the phylum Platyhelminthes is flattened from the dorsal surface.

Bioluminescence (the property of a living organism to emit light) is well-marked in ctenophores.

Cnidoblasts are used for anchorage, defense and for the capture of prey.

The name cnidaria is derived from the cnidoblasts or cnidocytes (which contain the stinging capsules or nematocysts) present on the tentacles and the body.

Choanocytes or collar cells line the spongocoel and the canals.