Correct Answer: B. Pancreas

Correct Answer: B. The study of evolutionary processes and their effects on populations

Explanation

Population ecology is a branch of ecology that focuses on the study of populations of organisms belonging to the same species. t involves examining how populations are distributed across different habitats and how their numbers change over time.

Correct Answer: C. producers and consumers

Correct Answer: C. tearing and grasping

Correct Answer: C. nuclear energy

Correct Answer: C. an ecosystem

Correct Answer: A. centromere

Explanation

(1) body stature /posture/shape of body

(2) shape of head/nose/ ear

(3) size of nose/head/ear

(4) colour of skin/hair/eye

(5) characteristic of voice/speech

(6) intelligence

(7) height, blood group, baldness

(8) tongue rolling

(9) sickle cell anaemia.

(ii) Transmittable characters in plants are:

(1) height of plant

(2) size of fruit/ weight of fruit/size of leaf

(3) taste of fruit

(4) colour of leaf/flower/fruits/seeds

(5) resistance to environmental factors/diseases/pests/drought

(6) shape of leaf/seed coat or taste/fruit/flower

(7) leaf texture

(8) life span/habit of growth

(b) Contribution of genetics to improvement in Agriculture are:

(i) It has helped to develop high yielding varieties of plants and animals

(ii) development of early maturing varieties

(iii) improvement of quality of yield

(iv) development of disease resistant varieties through hybridisation/cross breeding.

crossing of F1 generation with homozygous short individuals.

(ii) The phenotypic ratio of offspring in F2 generation is 2:2.

(iii) The genotypic ratio of F2 generation is 2: 2

(d) The probability is 50% or ½. This is because

(i) The genotype of the plants is Tt

(ii) The plants therefore produce gametes of two kinds, T and t in equal number.

(iii) The probability that a gamete will contain T gene is 1 out of 2.

Correct Answer: C. Mitochondrion

Explanation

The production of ATP happens in the mitochondrion, which likewise exists in both animals and plants.

Correct Answer: D) Reproduction

Explanation

The question is asking which of the following is not a function of the skin. The skin is the largest organ in the body and serves many functions. Option A states that excretion is not a function of the skin, but this is incorrect as the skin excretes sweat and other waste products. Option B states that protection is a function of the skin, which is correct as the skin protects the body from physical, chemical and biological damage. Option C states that homeostasis is a function of the skin, which is also correct as the skin helps to regulate body temperature and fluid balance. Option D states that reproduction is not a function of the skin, which is correct as the skin is not directly involved in the process of reproduction. Option E states that absorption of vitamin is a function of the skin, which is incorrect as the skin does not absorb vitamins. It is important to note that the skin also plays a crucial role in sensation, such as touch, pressure, pain, and temperature. The skin also synthesizes vitamin D from sunlight, which is important for bone health. Overall, the skin is a complex organ with multiple functions that are essential for maintaining a healthy body.