So, the order where plants show alternate, opposite and whorled phyllotaxy is China rose, Calotropis, and Nerium. Hence, option A is the correct option. Note: The phyllotaxy term is coined by Charles Bonnet. The study of phyllotaxy is used to describe the arrangement of leaves on a plant.

Corn (Zea mays) Description: This grass is a summer annual that becomes 4-16′ tall at maturity. The culm is stout, terete, light green, glabrous, and unbranched. Alternate leaves occur along the entire length of the culm, their blades becoming largest toward the lower-middle or middle of the culm.

grass leaf

The leaf blades are 10-40″ long and ¾–4½” across; they are ascending toward their bases, but arching toward their tips, and rather floppy overall. The leaf blades are linear to linear-lanceolate in shape, while their margins are entire (without conspicuous teeth) and often ciliate near the bases of the leaf blades.

It’s also packed with nutrients — high in vitamin K and potassium — and is used as an herbal remedy to treat issues including bladder infections, inflammation of the urinary system, inflammation of the prostate, kidney stones and bedwetting.

Ear: the structure that contains the kernels that are forming after fertilization. The female part of the corn plant. Kernel: it is the corn seed with one main function; to make another corn plant. Node: a place on the stem where growth occurs.

The maize grains are called as a fruit and not a seed because it comes from a separate ripened ovary within the grass inflorescence. In case of maize, the grain has a pericarp of the fruit fused with the seed coat.

Corn is a monoecious plant, a hermaphrodite, where both the male and female reproductive parts are present in the same plant. Reproduction is carried out sexually.

The tassel represents the male flower on a corn plant, while the ear shoots represent the female flowers. A “tassel ear” is an odd-looking affair and is found almost exclusively on tillers or “suckers” of a corn plant along the edges of a field or in otherwise thinly populated areas of a field.

Do you really need to detassel corn in your garden? Detasseling helps to pollinate corn plants and encourages or prevents cross-pollination. Removing the Tassel isn’t necessary if you only grow a single variety of corn, but it can increase crop resilience and yield.

After the bulk of the plant growth is complete, tassels will appear on top of the plant. Corn plant tassels can be green, purple, or yellow. The tassel’s job is to produce pollen that encourages the growth and ripening of the corn ear. Wind carries the pollen to the female flower, or the silk, on the corn plant.

The topping of plants is for seed corn production. The tassels are removed so that plants can only be pollinated by other plants. This is the process of hybrid seed. Hybrid seed results in much better plant vigor and yield.

Poor irrigation – One reason corn plants are not producing ears has to do with irrigation. If limited nitrogen is available, the plant needs lots of calcium and potassium in order to produce ears. Spacing – Lastly, one of the most common reasons for no ears of corn on corn stalks is space.

Detasseling corn is still a widely used practice to produce hybrid corn, said Joe Lauer, a professor and agronomist with UW-Extension. After pollination, the male rows are eventually removed to leave a field of hybrid corn, Lauer said.

Silking is defined when silks emerge from the ear to receive pollen and begin the fertilization process. Tasseling immediately precedes this growth stage, but essentially must coincide for successful pollination to occur. Corn is extremely sensitive to any stress which limits photosynthetic capacity at this time.

Reproductive Growth Stages Tassel (VT) – bottom-most branch of tassel completely visible and silk has not emerged. Silking (R1) – silks visible outside the husks. Blister (R2) – kernels white on outside, clear liquid inside. Milk (R3) – kernel yellow outside, milky white fluid inside.

Maize is a sensitive crop to moisture. Excess moisture in the initial stages is harmful to crop. Hence arrangements must be made to remove excess water upto knee high stage. Water stress at flowering and seed formation stages reduces the yield of crop.