Velamen present in orchids helps in

(1) absorption of nutrients from host plant

(2) respiration

(3) absorption of moisture from air

(4) synthesising food

Which among the following is a rootless plant?

(1) Nymphaea

(2) Sagittaria

(3) Ceratophyllum

(4) Vallisneria

Composite fruit develops from

(1) single ovary

(2) inflorescence

(3) apocaropous ovary

(4) pericarp

Cocoa is the plant from which chocolate is made. Which part is used to extract it?

(1) Flower

(2) Fruit

(3) Seeds

(4) Bark

The cells of the quiescent centre are characterised by

(1) having dense cytoplasm and prominent nuclei

(2) having light cytoplasm and small nuclei

(3) dividing regularly to add to the corpus

(4) dividing regularly to add to tunica

Which of the following is true?

(1) Umbel is a racemose inflorescence where all stalked flower aggregate on the flat receptacle.

(2) Raceme is a racemose inflorescence having main axis shortened & flower born acropetally.

(c) Spadix is a racemose inflorescence having pendulous spike with main axis much flattened.

(d) Spike is a racemose inflorescence having sessile flowers

The given figure shows L.S of the seed of maize. What do A, B, C, and D represent?

Identify the given figures A, B, C, D and E.

Which of the following is correctly matched?

1. Monstera - Fibrous root

2. Dahlia - Fasciculated root

3. Azadirachta - Adventitious root

4. Basil - Prop roots

Plants with inferior ovary usually bear

(1) pseudocarps

(2) berries

(3) aggregate fruits

(4) seedless fruits