BIOLOGY M.C.Q (1 Marks)

Choose the correct answer from the options given below:

$Image$

Name of muscle/location

  choose the correct answer from the options given below:

$A$. Phallic gland    $B$. Urecose gland    $C$. Nephrocytes    $D$. Fat body     $E$. Collaterial glands

Choose the correct answer from the options given below :

Choose the correct answer from the options give below:

Statement $I$: Ligaments are dense irregular tissue.

Statement $II$: Cartilage is dense regular tissue.

In the light of the above statements, choose the correct answer from the options given below:

Choose the correct answer from the options given below:

$(1)$ Frog is a poikilotherm.

$(2)$ Frog does not have any coronary circulation.

$(3)$ Heart is “myogenic” in nature.

$(4)$ Heart is autoexcitable.

$A.$ The dry surface of the skin and the moist surface of the buccal cavity. Are lined by compound epithelium.

$B.$ Cuboidal epithelium facilitates diffusion across the epithelium.

$C.$ Intercalated discs are the cell junctions between the cardiac muscle cells.

$D.$ Skeletal muscle fibers can be located in the biceps muscle.

$E.$ In a bone, osteocytes are located in lacunae.

$\begin{array}{|l|l|} \hline Column\;-\;I  & Column\;-\;II \\ \hline A.\;Caecum\;in\;earthworm & 1.\;Tubular \\ \hline B.\;Caecum\;in\;cockroach & 2.\;Forgut \\ \hline C.\;Gizzard\;in\;earthworm & 3.\;26^{th}\;segment \\ \hline D.\;Gizzard\;in\;cockroach & 4.\;8-9\;segment \\ \hline \end{array}$

$\begin{array}{|l|l|} \hline Column-I  & Column-II  \\ \hline P\;-\;Cartilage & 1\;-\;PCT  \\ \hline Q\;-\;Cuboidal\;epithelium & 2\;-\;Bronchioles  \\ \hline R\;-\;Compound\;epithelium & 3\;-\;limbs  \\ \hline S\;-\;Cilliated\;epithelium & 4\;-\;Pharynx \\ \hline   & 5\;-\;Muscles\;of\;eyes \\ \hline \end{array}$

$\begin{array}{|p{0.35\linewidth}|p{0.55\linewidth}|} \hline Column\,\,-\,\,I & Column\,\,-\,\,II  \\ \hline 1.\,\,Smooth\,\,muscles & p.\,\,Hard\,\,and\,\,not\,\,pliable\,\,ground\,\,substance \\ \hline 2.\,\,Skeletal\,\,muscles & q.\,\,Blood\,\,vessel\,\,stomach\,\,intestine  \\ \hline 3.\,\,Bone & r.\,\,Condroblast  \\ \hline 4.\,\,Cartilage  & s.\,\,A-band   \\ \hline \end{array}$

$X-Y-Z$

$\begin{array}{|l|l|} \hline Column\;-\;I & Column\;-\;II \\ \hline A.\;Skin & 1.\;Accessory\;digestive\;gland \\ \hline B.\;Pancreas & 2.\;Respiratory\;organ \\ \hline C.\;Genitalia & 3.\;Sensory\;organ \\ \hline D.\;Eye & 4.\;Reproductive\;organ  \\ \hline & 5.\;Excretory\;organ  \\ \hline \end{array}$

$(i)$ The body of the cockroach is segmented and divisible into three distinct regions - head, thorax and abdomen.

$(ii)$ Blood vascular system is of closed type.

$(iii)$ They are monoecious and both seves have well developed reproductive organs.

$(iv)$ The development of P. americana is paurometabolus, meaning there is development through nymphal stage.

$(i)$ Excretion is performed by malphigian tubules.

$(ii)$ They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut.

$(iii)$ In addition, fat body, nephrocytes and urecose glands also help in excretion.

$(i)$ Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.

$(ii)$ Gizzard helps in grinding the food particles.

$(iii)$ A ring of $6-8$ blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.

$(iv)$ At the junction of midgut and hindgut is present another ring of $100-150$ yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.

($i$) It consists of a network of trachea, that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.

($ii$) Thin branching tubes carry oxygen from the air to all the parts.

($iii$) The opening of the spiracles is regulated by sphincters.

($iv$) Exchange of gases take place at the tracheoles by diffusion.

($i$) 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.

$(i)$ Head is formed by the fusion of $6$ -segments.

$(ii)$ Mouth parts are biting and chewing type.

$(iii)$ Crop is the part of mid gut.

Identify structures $A$ to $D$.

$R$-Sensory receptors help in monitoring the environment

 $\begin{array}{|p{0.3\linewidth}|l|} \hline Column-I   & Column-II  \\ \hline 1.\,\,Exoskeleton  & p.\;Thorax  \\ \hline 2.\,\,Three\,\,ganglion  & q.\;Chitin  \\ \hline 3.\,\,One\,\,pair\,\,of\,\,seminal\,\,vesicle & r.\;6^{th}-7^{th}\,\,segments\;\;of\;\;abdomen \\ \hline 4.\,\,Mushroom\,\,shaped  & s.\;6^{th}\,\,segments  \\ \hline \end{array}$

$X-Y-Z$

$(i)$ Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.

$(ii)$ Males bear a pair of short, thread like anal styles which are absent in females.

$(iii)$ Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.

$(iv)$ The nymph grows by moulting about $13$ times to reach the adult form.

$R$ : These cells are involuntary in function.

$(i)$ 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?

$(i)$ These muscle fibres taper at both ends and do not show striations.

$(ii)$ The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.

$(iii)$ They are 'involuntary' as their function cannot be directly controlled.