PART - 1 - Unit II : CH - 6 Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Internal respiration can occur only when the pressure of the air in the lungs (intra-pulmonary pressure) is less than the atmospheric pressure, that is, the pressure in the lungs is less relative to the atmospheric pressure.

Tissue is a group of cells that have a common origin but the functions are different.

The neuroendocrine regulation of the posterior pituitary gland occurs directly under the hypothalamus.

Presence of ketone bodies in urine causes a disease called ketonuria.

Sexual dimorphism is not found in frogs.

Madcow disease in cattle is caused by viroid.

Vasopressin stimulates the reabsorption of water and ions from the distal convoluted tubule of the kidney.

Organisms also live in unusual habitats.

The ring arrangement of vascular bundle is a characteristic of dicot stem.

Fungi and lichens are examples of symbiosis.