NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PLANTAE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following are the characteristics of Zea mays?I. In the stems, no distinct pith is presentII. Leaves with parallel venationIII. Petals and sepals are not distinctIV. Floral parts are divisible by three
A
I, II and III
B
I, II and IV
C
II, III and IV
D
I, II, III and IV
Explanation: 

Detailed explanation-1: -Plant Characteristics Maize (Zea mays) is a tall, deep-rooted, warm weather annual grass. A single long stalk will develop from seed. Long smooth leaves are attached at the stem nodes. Seed producing shoots originate from the base of the main stem.

Detailed explanation-2: -Maize is a monoecious plant with staminate flowers borne in a tassel and pistillate flowers in ears. (A) A pair of staminate flowers each showing a lemma, a palea, and three stamens (the two lodicules are not seen here). (B) A row of pistillate flowers showing one silk (style) each.

Detailed explanation-3: -The seven characteristics of plants are nutrition, respiration, movement, excretion, growth, reproduction, and Sensitivity.

Detailed explanation-4: -It has an erect growth form with usually 1 main stem and 1-2 lateral branches. Large leaves (0.3-1.5 m long, 5-15 cm wide) are linear (straight with parallel sides) to lanceolate (lance-shaped) with a prominent midrib. Each stem produces 8-21 leaves which occur singly on alternating sides of the stem.

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