STD 11 - 16. Excretory product and their elimination — NEET STD 11 Science — Question

Movement is one of the significant features of living beings. Which of the following statements are correct for movement ?
(i) Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement.
(ii) Movement of cilia, flagella and tentacles are shown by many organisms.
(iii) Human beings can move limbs, jaws, eyelids, tongue, etc., are not consider as movement.
(iv) Some of the movements result in a change of place or location.
(v) Change of place or location is a voluntary movements are called locomotory movements.
(vi) Walking, running, climbing, flying, swimming are all some forms of locomotory movements.

Which one of the following plasma proteins is involved in the coagulation of blood?

In amphibians the heart is

Granulocytes are formed in

Assertion: In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
Reason: The globular head of actin is an active ATPase enzyme and has binding sites for ATP and active sites for myosin.

If gene migration happens multiple times, it would lead to

Identify the wrong statements for poriferans from given statements.
(i) Metameric segmentation present in poriferans
(ii) Notochord is a mesodermally derived in poriferans.
(iii) Poriferans are primitive multicellular and have cellular level of organisation.
(iv) Digestion is intracellular in poriferans
(v) Poriferans are hermaphrodite and fertilisation is internal.

Choose correct option for given statements :
(i) The female external genitalia do not include hymen and clitoris.
(ii) Mons pubis is a cushion of fatty tissue covered by skin and pubic hair in male.
(iii) The labia minora are paired folds of tissue under the labia majora.
(iv) The opening of the vagina is completely covered by a membrane called hymen.
(v) The clitoris is a tiny finger-like structure which lies at the upper junction of the two labia minora above the urethral opening.
(vi) The hymen is often torn during the first coitus (intercourse).

Where will you look for the sporozoites of the malarial parasite?