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Growth hormone, also called somatotropin, peptide hormone secreted by the anterior lobe of the pituitary gland. The pituitary gland is located in the brain, between the hypothalamus and the pineal gland, just behind the bridge of the nose. Hence, the growth hormone is secreted by the head region.

The combination of the Bowman's capsule (II) and Glomerulus (I) make up the Malpighian body.

The part labeled III is called the distal convoluted tubule. It plays a critical role in a variety of homeostatic processes, including sodium chloride reabsorption, potassium secretion, and calcium and magnesium handling.

Bacteria in the large intestine also make some important substances, such as vitamin K (see Vitamin K), which plays an important role in blood clotting.

Concave lenses, also known as minus lenses, are used to correct short-sightedness, or myopia: Concave lenses work by bending light rays outwards, which causes them to focus further back in the eye on the retina. This counteracts the tendency of short-sighted people to focus before the back of the eyeball.

The two main organs of the inner ear are the cochlea and the vestibular system(semi-circular canals): Cochlea:The organ of hearing, shaped like a snail, that converts sound into electrical impulses sent to the brain. Semi-circular canals: The organ of balance, made up of the semicircular canals, vestibule, and utricle and saccule. The semicircular canals respond to rotational movements, while the utricle and saccule respond to changes in head position.

For growth to occur, anabolism should be greater than catabolism: Anabolism: The building-up process of synthesis. e.g DNA synthesis, protein synthesis Catabolism: The destructive process of breaking down molecules. e.g respiration When anabolism is greater than catabolism, the organism is synthesizing more new material than it is breaking down. This results in growth, which is an irreversible increase in the size, volume, or weight of the body.

This is the Biuret's test which is a chemical test that detects the presence of peptide bonds in a substance, and is used to measure the amount of protein in a sample. - Option A

the cerebellum is a thick and convoluted portion of the hindbrain. Among other functions, it controls the posture or balance of the body.

The peripheral arrangement of vascular tissues in dicots is a characteristic of the internal structure of the stem: In dicot stems, vascular bundles are arranged in a ring near the stem's edge. The vascular bundles are made up of xylem and phloem, which are the plant's main transport systems. The correct answer is option C

III ⇔ is a photosynthesizing water plant such as Elodea.

The set-up experiment is to test for the presence of oxygen in plants. The bubbles produced in the test tube are oxygen gas that's released by the plant during photosynthesis. - Option D

The Scapula is part of the pectoral girdle, which attaches the upper limbs to the body. The scapula is a flat, triangular bone that supports the muscles of the shoulder joint. The Ischium, on the other hand is part of the pelvis, which helps support the upper body's weight and balance. The ischium is also part of the acetabulum, a ball and socket joint formed by the pelvic bone and femur. The scapula is part of the appendicular skeleton, while the ischium is part of the pelvic girdle. In summary, the appendicular skeleton also includes the upper and lower limbs, the bones of the hands and feet, and the pelvic girdle.- Option C

To estimate the volume of air in a soil sample using a measuring cylinder, you can calculate the difference between the total volume of the soil and water mixture and the observed volume of the mixture: Calculate the total volume of the soil and water mixture, (p+q)cm3 Observe the total volume of the water-soil mixture, r cm3 Subtract the observed volume from the total volume to calculate the volume of air. In other words, r < (p + q), because on mixing with water, air present in the soil would have been released and escaped from the soil.

Ecological succession is the development of species after a disaster that destroys an ecosystem. The relationship between species diversity and succession is important for conserving large areas of old-growth habitats. Ecological succession typically increases species diversity. During early succession, new species arrive, increasing diversity. For example, after a wildfire, small plants like mosses and other pioneer species grow on the barren soil, breaking it down into soil that other plants can use. - A