Structural organisation in animals practice · Hard

Protandry refers to the

Most of the glands of the body are of

The colour in the brown fat is due is

Which of the following properties of cardiac
muscles are correct?

(i) These are the muscles of the heart.

(ii) These are non-striated.

(iii) These are involuntary in their functions.

(iv) These are controlled by nervous system directly.

(v) Cardiac muscles not straited.

Select the correct option.

Integument is usually called jack of all trades' because:

Malpighian tubules absorb nitrogenous waste products from A and convert them into B .Choose the option that correctly fill the blanks A and B.

Cells of the epithelial tissue rest on a basement membrane, which is made up of

Study the following statements
I. It forms the lining of the cavities of alveoli of the lungs
II. It occurs in the ducts of sweat glands
III. It forms the lining of salivary glands and glands
IV. It is a loose connective tissue
Which of the above statements are associated with the simple epithelial tissue

Consider the following statements about Rana tigrina
I. The skin of frog sheds after every few weeks
II. Camouflage is a common defensive mechanism of frog
III. Chest muscles are involved in the process of respiration
IV. Their nervous system consists of a brain, spinal cord and nerves
Which of the above statement is incorrect?

The skin of frog acts as …A… in water and on land, the …B…, …C… and …D… acts as respiratory organs. Choose the correct combination in accordance to above statement

Which of the following statement is correct in reference with the frog?
I. Eyes are bulged and covered by nictitating membrane
II. Membranous tympanum receives the sound signals
III. The frog never drinks water
IV. A pair of nostrils is preset above the mouth

Read the following statements.
(i) It is a contractile tissue present only in the heart.
(ii) Cell junctions fuse the plasma membranes of these cells and make them stick together.
(iii) Communication juntions at some fusion points allow the cells to contract as a unit, i.e., when one cell receives a signal to contract, its neighbours are also stimulated to contract.
Which of the following type of tissue is being described by the above statements?

Striated and voluntary muscles occur in

All cells in epithelium are held together with little intercellular material. In nearly all animal tissues, specialized junctions provide both structural and functional link between individual cells. Which of the following junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cell?

Structure which increases the effective area of absorption in the intestine w.r.t. earthworm, is called as

Which of the following statement is/are incorrect Periplanata americana?
I. They are nocturnal omnivores that lives in the damp places
II. Its body is segmented and divisible in two region-head and abdomen
III. Antennae have sensory receptor to monitor the environment
IV. Head can move in all direction due to the presence of movable neck
The correction option is

Seggregate the given set of statements regarding frog into true and false category
I. Frogs do not have a lymphatic system
II. Frogs are ammonotelic animals
III. Hindlimbs of frog ends in five digits and forelimbs ends in four digits
IV. Female frog contains sound producing vocal sacs which are absent in male frog

Select the type of gland with its appropriate example.

Abdominal ganglia in cockroach are found in segments

Efferent salivary ducts in Periplaneta open into

Zonula adherens is another name for:

Fibres and cells are compactly packed in the dense connective tissues. Orientation of which component is responsible for considering them dense regular in tendons?

Follow the features:

a) Fibres and fibroblasts are compactly packed

b) It is mesodermal in origin

c) Many fibres are oriented differently.

Where do you find the connective tissue with the above features?

Which of the following statement(s) is/are correct about nervous system of cockroach?
(i) It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
(ii) There are six ganglia lie in the thorax, and three in the abdomen.
(iii) The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
(iv) Each eye consists of about 5000 hexagonal ommatidia.

Microvilli of intestinal epithelium are similar in function with

Which one is not found in testis of frog?

Choose the fabricated statement from the following.

Assertion (A) : Pseudo stratified epithelium gives the false appearance of stratified epithelium
Reason (R) : Pseudo stratified epithelium is made up of more than one layer of cells to provide protection against stress

Which steroid is used for transformation:-

Frog has different types of sense organs
I. Sensory papillae
II. Nasal epithelium
III. Taste buds
IV. Eyes
V. Tympanum with internal ears
Which of these are well organised structures?