Assignment
1. What is the difference between a true fruit and a false fruit? Give at least two examples each.
2. Write any three functions of a fruit.
3. What are the parts of a pericarp? From which part of an ovary does pericarp develop?
4. Define the below.
a) Leaf
b) Venation
c) Phyllotaxy
d) Flower
e) Pollination
f) Fertilization
g) Zygote
h) Syngamy
i) Fruit
j) Seed
Answers
Answer:
1 False fruits arise from floral parts but not from the ovary. On the other hand, true fruits arise from the fertilized ovary. The examples of false fruits are apple, gourd and pears. The examples of true fruits are mango, cherry and watermelon.
2 The functions of the fruit is to protect the seed inside and aid in its dispersal.
Some fruits harden to make accessing the seed difficult.
Many fruits promote wind dispersal .
Some fruits have hooks or spurs, which cling to the skin and fur of animals and are dispersed to far away places.
Fruits like pods rip open forcefully when dry , flinging the seeds away.
Fleshy coloured fruits attract birds and animals and are eaten by them. They pass unharmed through the digestive tract and are thus dispersed away from the parent plant.
4.a Leaf, in botany, any usually flattened green outgrowth from the stem of a vascular plant. ... As the primary sites of photosynthesis, leaves manufacture food for plants, which in turn ultimately nourish and sustain all land animals. Botanically, leaves are an integral part of the stem system.
b. Venation means arrangement of veins, as in a leaf or in the wing of an insect. these veins collectively.
c. In botany, phyllotaxis or phyllotaxy is the arrangement of leaves on a plant stem (from Ancient Greek phýllon "leaf" and táxis "arrangement"). Phyllotactic spirals form a distinctive class of patterns in nature.
d.