Explanation

A nucleotide, the building block of DNA and RNA, consists of three components:

1. A phosphate group (phosphate)
2. A sugar molecule (deoxyribose in DNA and ribose in RNA)
3. One of four nitrogenous bases (Adenine, Guanine, Cytosine, and Thymine in DNA; Adenine, Guanine, Cytosine, and Uracil in RNA)

Explanation

The structure of the brain is similar to the structure of a Walnut, with both having:

• A hard outer layer (cranium vs. shell)
• A wrinkled surface (brain's cerebral cortex vs. walnut's surface)
• A distinct left and right half (brain's hemispheres vs. walnut's halves)

Explanation

• Animals like bees, butterflies, moths, birds, and bats are important pollinators of fruit plants.
• These animals visit flowers to collect nectar and pollen, and in the process, transfer pollen from one flower to another.
• It llowing for fertilization to occur and fruit to develop.

Explanation

• Over-eating can lead to obesity.
• While consuming spicy food can irritate the stomach lining.
• It potentially causing ulcers in susceptible individuals.

Explanation

• Ecology is the scientific study of the relationships between living organisms (biotic factors) and their environment (abiotic factors).
• Including other organisms and their physical surroundings.

Explanation

• Cholera, diarrhea, and typhoid diseases are waterborne diseases caused by microbial pollutants.
• Such as bacteria (Vibrio cholerae, Salmonella Typhi), viruses, and protozoa (Entamoeba histolytica) that contaminate water sources.

Explanation

Flowering plants are classified into two main groups:

1. Monocotyledons (Monocots) have one cotyledon. Examples: maize, rice, wheat, grasses.
2. Dicotyledons (Dicots) have two cotyledon. Examples: mango, lemon, gram, beans or pea, sunflowers.

Explanation

Sheep and birds are primary consumers because they eat plants and plant products, such as grass, leaves, seeds, and fruits.

Explanation

A deficiency of sodium can lead to imbalances in fluid volume in the vessels and tissues, resulting in conditions such as:

• Hyponatremia (low sodium levels in the blood)
• Fluid retention and swelling
• Edema (excess fluid in tissues)

Explanation

• The larval stage of a frog is known as Tadpoles.
• This stage is characterized by a aquatic, fish-like body, with gills for breathing and a tail for swimming.