TRANSLOCATION OF WATER AND MINERALS (ASCENT OF SAP) The upward movement of sap (water with dissolved ingredients) from the root towards the top of the plant is known as ascent of sap. Roots are organs concerned with the absorption of water. If the plant is to survive and grow, this water absorbed by roots must … Read more

Information on Biloba Ginkgo

Biloba ginkgo herb is extracted from the oldest tree in the world ginkgo tree. This tree first appeared around for 150-200 million years ago. Biloba ginkgo info could be availed of anytime, anywhere in the internet. The internet has become a veritable source of biloba ginkgo info. Biloba ginkgo info about the history of the … Read more

Plant Growth and Development MCQs

1. A primary root grows from 5 cm to 19 cm in a week. Calculate the actual growth rate (AGR) and relative growth rate (RGR) over the period. 2.In which category will you place this flower? Choose the correct option. (a) SDP (b) LDP (c) DNP (d) L-SDP 3. Which of the following is correct … Read more


1. On the basis of relative position of different floral parts on the thalamus, a flower can be hypogynous, perigynous or epigynous. With respect to the given figures (A, B, C and D), select the correct option. 2. Which floral conditions are represented by the symbols % and * respectively? (a) Zygomorphic and actinomorphic flowers … Read more

Epigynous Flowers

1.The upper part of thalamus is usually flask-shaped or tubular. 2.Calyx, corolla and androecium arise from above the level of ovary. 3.Ovary is inferior while all other floral parts are superior. 4.The ovary is completely inserted and the wall of ovary is fused with the thalamus. 5.Calyx, corolla and androecium develop jointly from the neck … Read more

Perigynous Flowers

1.The upper part of thalamus may be disc shaped, cup-shaped or flask-shaped. 2.Calyx, corolla and androecium arise from around the ovary and not beneath it. 3.Ovary is half-superior/half-inferior. 4.The ovary is placed at the bottom of cup or flask-shaped thalamus. Ovary wall is not fused with the thalamus. 5.Calyx, corolla and androecium often develop from … Read more

Hypogynous Flowers

1. The upper part of thalamus is slightly swollen and forms a cushion like disc. 2. Calyx, corolla and androecium arise below the level of ovary. 3. Ovary is superior while all other floral parts are inferior. 4. The gynoecium is placed at the top of the thalamus. The wall of ovary is not fused … Read more

Carpels Or Gynoecium

• Carpels or female reproductive parts form the innermost whorl of a flower. The free occurring unit of gynoecium is called pistil, which consists of basal swollen ovary, a stalk like style and a terminal receptive part called stigma. • Depending on the number of carpels, gynoecium may be monocarpellary, bicarpellary, tricarpellary, tetra- carpellary and … Read more

Stamens or Androecium

• Stamens are the male reproductive parts of a flower. A stamen is made up of two parts, a stalk like filament and a knob like terminal anther. Each anther has two lobes which are attached at the back by a sterile band called connective. • In majority of angiosperms, anthers are two lobed or … Read more

AIIMS PMT AIPMT JIPMER Plant Growth and Development MCQs


1. In dicot roots cork cambium originates in (a) pith (b) hypodermis (c) pericycle (d) endodermis. 2. Differential division of RAM gives rise to (a) protoderm (b) procambium (c) calyptrogen (d) all of these. 3. Which of the following is a primary lateral meristem? (a) Interfascicular cambium (b) Intrafascicular cambium (c) Cork cambium (d) Phellogen. 4. … Read more

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