STANDARD Zoology Class 11 Questions

Macrophages and Leucocyte exhibit :-

Which of the following group of animals reproduces only by sexual means?

The efferent process of neuron is known as

In man and mammals, air passes from outside into the lungs through

In man, the urea is mainly produced in

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): With the help of several ommatidia, a cockroach can perceive several images of an object, i.e., mosaic vision. Reason (R): Mosaic vision gives more sensitivity but less resolution. In the light of the above statements, choose the most appropriate answer from the option given below:

Match the items given in column I with those in column II and select the correct option given below.

Receptors for protein hormones are located

Aquatic reptiles are

Coelom is cavity between alimentary canal and body wall enclosed by

Serum differs from blood in

Assertion: Frogs undergo aestivation & hibernation. Reason: Frogs take shelter in deep burrows to protect themselves from extreme heat & cold.

The hind brain consists of

Which one of the following statement is incorrect?

Aquatic annelids (like Nereis) possess lateral appendages called ______________ which help in swimming.

Which of the following are the type of nerve fibres of PNS

True coelom or body cavity occurs in

Kidneys are reddish brown, bean-shaped structures situated between the levels of _______ thoracic and ______ lumbar vertebrae

In humans, majority of nephrons have their Loop of Henle's ;

Cell-tissue organisation occurs in

Besides Annelida and Arthropoda metamerism is found in

The following substances are the excretory products in animals. Choose the least toxic form among them

Which one of the following pairs of structures distinguishes a nerve cell from other types of cell

Match the following list of animals with their level of organization

Iter or cerebral aqueduct or aqueduct of sylvius

The liquid which is collected in the cavity of Bowman's capsule is

In which phylum A, B and C are found

Which of the nerve fibres of PNS transmit regulatory impulses from CNS to the concerned peripheral tissues/ organs

Identify the true statements and choose the correct option accordingly I. Blood vessel leading to the glomerulus is called efferent arteriole II. Vasa recta, peritubular capillaries glomerulus, all have blood III. Cortical nephrons have highly reduced vasa recta IV. Vasa recta runs parallel to the Henle’s loop in the juxta-medullary nephron

Nissl's granules are absent in

In which triploblastic animal coelom is absent

Radial symmetry occurs in

Autonomic neural system does not relay impulses from the CNS to

Juxtaglomerular apparatus is made up of

A list of animals is given below, Identify the animals with an open circulatory system and choose the correct answer: (A) Ascidia (B) Cockroach (C) Earthworm (D) Prawn (E) Silverfish (F) Snail

Which one of the following body functions is not performed by kidneys

The appetite and satiety centres in the brain of man are located in the region of the

Proximal convoluted tubule PCT is lined with

Canal system is a characteristic of

The junction between the axon ending of one neuron and dendrites of next neuron is termed as

The part of a nephron which opens into the collecting duct is/are

Nodes of Ranvier are found in

A file like rasping organ for feeding, called radula, present in the phylum __________.

Short fibres which branch repeatedly, project out of cell body and contains Nissl's granule are called

In phylum echinodermata, the adult echinoderms are ______A________ but larvae are _______B______ .

An area in the brain which is associated with strong emotions is

In most simple type of canal system of porifera, water flows through which one of the following ways

Consider the following statements A. Flame cells are excretory structures in flatworms B. Green glands are excretory organs in annelids C. Columns of Bertini are the conical projections of renal pelvis into renal medulla between the renal pyramids

Hydra is

In the electron transport system present in the inner mitochondrial membrane, complexes I and IV are respectively