STD 11 - 17. Locomotion and movement — NEET STD 11 Science — Question

Which of the following conditions will stimulate parathyroid gland to release parathyroid hormone?

The best way to decrease population of a country is:

Due to which of the following organism, yield of rice is increased

Statement I: Cranial meninges consists of an outer layer called pia meter, a very this middle layer called arachnoid and inner layer called dura meter.
Statement II: The brain can be divided into three major parts.

The unit of photoreception, in a compound eye of cockroach and other insects, is

During its formation, bread becomes porous due to release of Carbon dioxide by the action of

Which of the following are phagocytic in nature?

Which statements are incorrect for mechanisms of nerve impulse conduction along electrical junctions of neuron or electrical synapse ?
(i) Nerve impulse flow directly from one neuron to other across the synapses in electrical synapses.
(ii) Transmission of an impulse across electrical synapses is very similar to impulse conduction along a single axon.
(iii) Impulse transmission across an electrical synapse is always faster than that across a chemical synapse.
(iv) Electrical synapses are rare in our system.
(v) At an electrical synapse, the membranes of the pre and post-synaptic neurons are separated by a fluid-filled space called synaptic cleft is thick.
(vi) Chemicals called neurotransmitters are involved in the transmission of impulses at this synapse.

Which one of the following operations with flowering plants would be most likely to produce the greatest number of variations in the offsprings

Smooth muscles are_