Correct Answer: D. dracunculiasis and haemophilia

Correct Answer: A. Sperm cell

Correct Answer: B. morphological variation

Correct Answer: D. species

Correct Answer: A) pancreas

Explanation

The question is asking which organ in the body produces both hormones and enzymes. The options provided are: pancreas, ileum, gall bladder, and kidney. The correct answer is Option A: pancreas. The pancreas is a gland located behind the stomach and it produces enzymes that help with digestion in the small intestine. It also produces hormones such as insulin and glucagon that regulate blood sugar levels. The ileum is a part of the small intestine that absorbs nutrients from digested food. It does not produce hormones or enzymes. The gall bladder is a small organ located under the liver that stores bile, which helps with the digestion of fats. It does not produce hormones or enzymes. The kidney is an organ that filters waste products from the blood and produces urine. It does not produce hormones or enzymes. It's important to note that there are many glands in the body that produce hormones, but the pancreas is unique in that it also produces enzymes for digestion. Understanding the functions of different organs and glands in the body is important for understanding how the body works and how to maintain good health.

Correct Answer: B. community

Explanation

(a)(i) Arteries:

• carry blood away from the heart.
• transport oxygenated blood with the exception of pulmonary artery.

(ii) Capillaries: -

• permit exchange of materials between blood and tissues. .
• links the arteries and veins.

(iii) Veins: -

• carry blood to the heart.
• transport deoxygenated blood except pulmonary vein.

(iv) Xylem: -

• transports water/dissolved mineral salts
• serves as a supporting tissue/strengthening tissue.

(v) Phloem: -

• transports manufactured food/auxins/plants hormones
• performs strengthening supporting function.

(b) Changes in blood composition:

(i) Lungs: -

• oxygen is added to the blood.
• carbon dioxide is removed from the blood.
• water is removed from the blood.

(ii) Liver: -

• urea is added to the blood.
• hormonal level is reduced.
• glucose level reduced.
• worn out erythrocytes are removed from the blood.

(iii)Kidneys: Water, urea, some glucose; mineral salts are reduced in the blood.

(iv) Small Intestine: -simple sugars/glucose, amino acids; water; salts and vitamins are added to the blood.

(c) Cellular Components of blood:Red blood cells/erythrocytes; white blood cells/leacocytes; and platelets/ thrombocytes.

Correct Answer: D. earthworm

Correct Answer: B) exoskeleton

Explanation

The question is asking which type of skeleton is most appropriate for a cockroach. The options to choose from are hydrostatic skeleton, exoskeleton, endoskeleton, cartilaginous skeleton, and bony skeleton. A skeleton is a structure that supports and protects the body of an animal. There are different types of skeletons, and each animal has a skeleton that is most appropriate for its body type and lifestyle. A hydrostatic skeleton is a type of skeleton that is made up of fluid-filled compartments surrounded by muscles. This type of skeleton is found in animals such as worms and jellyfish. An exoskeleton is a hard outer covering that provides support and protection to the body. This type of skeleton is found in insects, such as cockroaches, and crustaceans, such as crabs. An endoskeleton is an internal skeleton that provides support and protection to the body. This type of skeleton is found in vertebrates, such as humans and fish. A cartilaginous skeleton is a type of skeleton that is made up of cartilage. This type of skeleton is found in animals such as sharks and rays. A bony skeleton is a type of skeleton that is made up of bones. This type of skeleton is found in vertebrates, such as humans and birds. Based on the options provided, the most appropriate type of skeleton for a cockroach is the exoskeleton, which is a hard outer covering that supports and protects the body. Therefore, Option B is the correct answer. To summarize, the cockroach has an exoskeleton, which is a hard outer covering that provides support and protection to the body.

Correct Answer: A. complex cytoplasm in which different regions are poorly defined