In plant reproduction, the phenomenon where the pollen tube enters the ovule through the micropyle is called: MCQ with Answer and Explanation

Explanation:
The cerebellum, located at the back of the brain below the cerebrum, coordinates voluntary movements, maintains posture, balance, and muscle tone. Damage leads to unsteady gait and tremors. The cerebrum controls thinking, memory, and voluntary actions. Thalamus relays sensory impulses, hypothalamus regulates body temperature, hunger, and endocrine functions. Cerebellum is often called the 'little brain'.

Explanation:
Glucagon-like Peptide-1 (GLP-1) is a powerful incretin hormone secreted by the L cells of the distal small intestine (ileum) and colon in response to food ingestion. Its primary functions are highly beneficial for glucose homeostasis: it stimulates insulin secretion from the pancreas in a glucose-dependent manner (only when blood glucose is high), inhibits glucagon secretion, slows down gastric emptying (allowing more time for nutrient absorption), and acts on the brain to promote satiety and reduce food intake. GLP-1 analogs (like exenatide) are used as drugs to treat type 2 diabetes.

Explanation:
Lymph is the fluid within lymphatic vessels, derived from interstitial fluid that has entered lymph capillaries. It contains white blood cells, especially lymphocytes, and transports fats (as chyle) from the intestine. Plasma is blood fluid, serum is plasma without clotting factors, tissue fluid is interstitial.