Advertisements
Advertisements
प्रश्न
How would you distinguish monocots from dicots?
उत्तर १
Differences between monocots and dicots are as follows :
| Monocot | Dicot | |
| 1 | The seeds contain one cotyledon | The seeds contain two cotyledons |
| 2 | Flowers are generally trimerous | Flowers are generally pentamerous or tetramerous |
| 3 | Pollen grains generally possess a single germ pore | Pollen grains commonly have three germ pores |
| 4 | Leaves generallypossess parallel venation | Leaves posses reticluate venation |
| 5 | Primary root is short lived. Tap root is absent. Adventitious roots present | Primary root is long lived and it forms tap root. Adventitious roots are found in some cases |
| 6 | In stems, ground tissue is not differentiated into cortex and pith | In stems, ground tissue is differentiated into cortex, pitch, endodermis etc |
| 7 | Vascular bundles are scattered and closed. Cambium absent | Vascular bundles are arranged in a ring and open Cambium present |
| 8 |
In root, a pith is always present. Vascular bundles are many (more than 8) |
In root, pith is absent Vascular bundles are few |
| 9 | Vessels are rounded in outline | Vessels are polygonal in outline |
उत्तर २
Differences between monocots and dicots are as follows :
| Monocot | Dicot | |
| 1 | The seeds contain one cotyledon | The seeds contain two cotyledons |
| 2 | Flowers are generally trimerous | Flowers are generally pentamerous or tetramerous |
| 3 | Pollen grains generally possess a single germ pore | Pollen grains commonly have three germ pores |
| 4 | Leaves generallypossess parallel venation | Leaves posses reticluate venation |
| 5 | Primary root is short lived. Tap root is absent. Adventitious roots present | Primary root is long lived and it forms tap root. Adventitious roots are found in some cases |
| 6 | In stems, ground tissue is not differentiated into cortex and pith | In stems, ground tissue is differentiated into cortex, pitch, endodermis etc |
| 7 | Vascular bundles are scattered and closed. Cambium absent | Vascular bundles are arranged in a ring and open Cambium present |
| 8 |
In root, a pith is always present. Vascular bundles are many (more than 8) |
In root, pith is absent Vascular bundles are few |
| 9 | Vessels are rounded in outline | Vessels are polygonal in outline |
APPEARS IN
संबंधित प्रश्न
Differentiate between the following
syngamy and triple fusion
Choose the correct option.
Which one of the following will grow better in moist and shady region?
Choose the correct option.
A particular plant had a pair of leaves at each node arranged in one plane. What is the arrangement called?
In a particular flower the insertion of floral whorls was in such a manner, so the ovary was below the level other three whorls, but its stigma was taller than other three whorls. What will you call such flower?
Choose the correct option.
Beet and Arum both store food for perennation. Are the examples for two different types?
The haploid number of chromosome for an angiosperm is 14, the number of chromosome in its endosperm would be
Mention the pigments and storage food of Dinophyceae.
Name the flagellation found in the zoospore of Oedogonium
In angiosperms, the male gametophyte is represented by
In angiosperms, ploidy of embryo sac is :
The embryo sac of an Angiosperm is made up of ______.
If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm ______.
Explain why sexual reproduction in angiosperms is said to take place through double fertilization and triple fusion. Also draw a labelled diagram of embryo sac to explain the phenomena.
