Correct Answer: C. complete culture solution

Correct Answer: C. it allows utilization of soil nutrients at different levels

Correct Answer: B. leaves turning yellow

Explanation

Manganese deficiency can be easy to spot in plants because, much like Magnesium deficiency (agriculture), the leaves start to turn yellow and undergo interveinal chlorosis. The difference between these two is that the younger leaves near the top of the plant show symptoms first because manganese is not mobile while in magnesium deficiency show symptoms in older leaves near the bottom of the plant.

Correct Answer: D. first lower molar and last upper premolar

Explanation

In the Carnivora, the carnassials are the modified last upper premolar and the first molar.

Correct Answer: C. photosynthesis

Correct Answer: A. the cells of the plant will be turgid

Explanation

(a) Pollination and Fertilization;

(i) Whereas pollination is the transfer of pollen grains from the anther of a flower to the stigma of a flower; fertilization is the fusion of the male gamete/nucleus, with that of the female gamete/nucleus; to form a zygote

(ii) Pollination precedes fertilization

(b) Features that ensure cross pollination and Examples;

(i) Dioecious plants/male and female flowers occur on separate plants e.g. pawpaw/ any correct example.

(ii) Dichogamy/Male and female parts mature at different times

(iii) Phragmanthera/ mistletoe; is protogynous/protandry/carpels mature before Stamens (thus separating. the reproductive structure in time) sun flower/cotton is protandrous/ stamen, mature before carpel. Crotolaria examples of ptologynous plant. Male and female parts are of different lengths/heterostyly/long style and short stamen e.g. Morinda. Moneocious plants/Male and female flowers occur on the same plant in different position e.g. Maize/Luffa/Oil palm/coconut etc (male flower at the apex matures first whereas the female flower in the axil of leaves matures later) the feathery stigma hang loosely and can catch airborne pollen grains but not from the same flower.

Structure: Most flowers are so structured as to prevent self pollination since only a particular insect/animal can effect pollination; e.g. Crotalaria/CentrocemaNigna/pea/groundnut- stamens mature first shedding pollen into a sac-like tube formed by the keel honey guides on the standard which direct the bee to the sectaries and the stigma points towards entrance of keel and can only receive pollen brought in by a visiting bee. Self-incompatibility/self-sterility (certain chemicals on the surface of the stigma prevent growth in pollen tubes; of pollen grains from the same flower) e.g. Clover. Possession of brightly coloured petals attract insects e.g. Delonix, Hibiscus. Sweet smell for attraction of insects e.g. Rose flower.

(c)(i) Agents of pollination are as follows

(a) Insect/bat/animal/any named animal

(b) Wind/Air

(c) Water

(ii) Features of wind dispersed fruits/ seeds

(a) Seeds are almost always with floss thereby aiding its ability to be flown or be airborne.

(b) Winged seeds/fruits

(c) Light-weight seeds/fruits

(d) Parachute/hairs.

Correct Answer: B. feeds on already manufactured food

Correct Answer: B. involuntary actions

Explanation

(a)(i) A joint is a point/place, where two or more bones meet/articulate in the body

(ii) Types of Joints Location in the Body

- Ball and socket joint -Shoulder/hip

-Hinge joint -Elbow/knee/phalanges

-Sliding/gliding joint - Wrist/ankle/vertebrae

-Pivot/rotating joint - Neck

(ii) Adaptation of structure to function;

(a) There is the presence of cartilage to reduce friction between 2 bones in contact

(b) Ligament holds the bones together

(c) Synovial membrane secretes the synovial fluid

(d) Synovial fluid lubricates the joint thereby minimize shock and friction leading to easy movement of joint.