STD 11 - 7. Structural organisation in animal — NEET STD 11 Science — Question

The membranes enclosing the brain and spinal cord are known as

Match List-l with List-ll.

List-l	List-II
(A) Tubectomy	(I) Non steroidel pills
(B) Withdrawl	(II) Barrier method
(C) Cervical caps	(III) Surgical method
(D) Saheli	(IV) Natural method

Choose the correct answer from the options given below:

Fallopian tube is the part of

Choose incorrect pair.

Choose correct option:

Which option is correct for conduction of nerve impulse along chemical synapse ?
(i) At synapse the membranes of the pre and post- synaptic neurons are separated by a fluid-filled space called synaptic cleft.
(ii) Chemicals called neurotransmitters are involved in the transmission of impulses at these synapses.
(iii) The axon terminals contain vesicles filled with these neurotransmitters.
(iv) When an impulse arrives at the axon terminal, synaptic vesicles release their neurotransmitters in the synaptic cleft.
(v) The released neurotransmitters bind to their specific receptors, present on the pre-synaptic membrane.
(vi) Opens ion channels allowing the entry of ions which can generate a new potential in the post- synaptic neuron.
(vii) The new potential developed is only excitatory.

Delete odd one

The term recombinant DNA refers to DNA

Which one of the following animals is a coelenterate