STD 11 - 14. Breathing and exchange in gases — NEET STD 11 Science — Question

Match the following with reference to cockroach and choose the correct option

Column-l	Column-II
A. Phallomere	i. Chain of developing ova
B. Gonopore	ii. Bundles of sperm
C. Spermatophore	iii. Opening of the ejaculatory duct
D. Ovarioles	iv. The external genitalia

Saltatory conduction occurs in:

Read the following and choose the option with all incorrect statements.
(i) The number of parathyroid gland present in human is four.
(ii) Parathyroid hormone decreases the Ca²⁺ levels in the blood and so its called hypocalcemic hormone.
(iii) Thymus glands secretes the peptide hormones called thymosins.
(iv) Adrenaline and nonadrenaline hormones are commonly called catecholamines, secreted by cortex part of adrenal gland and are called emergency hormones.
(v) The adrenal cortex can be divided into three layers called zona reticularis (outer layer); zona glomerulosa (middle layer) and zona fasciculata (inner layer). It secretes many hormones commonly called as corticoids.
(vi) The corticoids involved in carbohydrate metabolism are called glucocorticoid.
(vii) In our body, cortisol is the main glucocorticoid.
(viii) Aldosterone is the main mineralocorticoid in our body.
(ix) In pancreas, the α-cells secrete a hormone called glucagon, while ẞ-cells secrete insulin.
(x) Glucagon is peptide hormone which decrease blood sugar level and so called hypoglycemic hormone.

'Population explosion' being witnessed is mainly due to:

If the head of cockroach is cut off, it will still be alive for as long as one week. This is because of

Using which of the following after drinking alcohol causes death