Seed

The monocotyledonous seed has only one cotyledon. This note provides us an information about the types of seed.

Summary

The monocotyledonous seed has only one cotyledon. This note provides us an information about the types of seed.

Things to Remember

  • The monocotyledonous seed has only one cotyledon.
  • Monocots have only one seed leaf inside the seed coat.
  • If dicotyledonous seed is divided then we can see two different parts called radicle and plumule.
  • Many seeds do not have endosperm and they are called non-endospermic seed.
  • Radicle transforms into roots and plumule transform into the stem.

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Subjective Questions

Q1:

What is new accounting system?


Type: Very_short Difficulty: Easy

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Answer: <p>The new accounting system is the present accounting system of government of Nepal which keeps the systematic record of all revenues and expenditures of the government offices performed through the bank. It is the systematic and scientific system for recording all the revenue and expenditures of government offices.</p>

Q2:

What are the features of new accounting system?


Type: Very_short Difficulty: Easy

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Answer: <p>The following are the features of new accounting system:</p> <ol><li>It is based on the concept of double entry.</li> <li>It emphasis on banking transactions.</li> <li>It is based on budget heads.</li> <li>It is based on cash transaction.</li> <li>It uses different accounting forms for keeping the record.</li> <li>It is a simple and uniform type of accounting system.</li> </ol>

Q3:

Explain any three features of new accounting system?


Type: Short Difficulty: Easy

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Answer: <p>The following are the main features of new accounting system:</p> <ol><li><strong>Based on double entry concept</strong><br>The new accounting system is based on the principle of the double-entry system of accounting. It records the every financial transaction of government office by showing double effect i.e. debit and credit. Thus, it is called modern and scientific system of accounting.<br><br></li> <li><strong>Emphasis on banking transactions</strong> <br>Under new accounting system, all the government revenue and expenditures are performed through the bank. Every government office should deposit all its revenues into the bank and make expenditures through cheque. It helps to prevent the misuse of cash in government offices.<br><br></li> <li><strong>Based on budget heads</strong><br>The new accounting system has the provision of various budget heads for keeping records of the transaction. The transactions are recorded according to their budget and subheads. It helps to maintain the effective control over the budget.</li> </ol>

Q4:

What is the bracket used?


Type: Very_short Difficulty: Easy

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Answer: <p>The bracket is used to show the amount to be credited.</p>

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Seed

Seed

The Seed is the fertilized, matured ovule of a flowering plant, containing an embryo or rudimentary plant.Seeds are of different shape, size and colour. Specially seeds are of two types. They are:

  1. Monocotyledonous
  2. Dicotyledonous
Structure of seed

Seeds have the different shape, size and types but have same formation.

Monocotyledonous Seed

Maize and wheat have monocotyledonous seed. The monocotyledonous seed has only one cotyledon. Monocots have only one seed leaf inside the seed coat. It is often only a thin leaf because the endosperm to feed the new plant is not inside the seed leaf. When a monocot seed germinates, it produces a single leaf. It is usually long and narrow, like the adult leaf. Even when it is quite a round shape, there is only one seed leaf in a monocot.

The leaves of monocots are often long and narrow, with their veins in straight lines, up and down the leaf. Sometimes, the veins run from the centre of the leaf to the edge, parallel to one another.The stems of monocots are usually unbranched and fleshy. They do not grow thicker from year to year. New leaves often grow wrapped in a protective sheath formed by the older leaf.

Dicotyledonous seed

When a dicot germinates, it produces two seed leaves. They contain the food for the new plant, so they are usually fatter than the true leaves. The first true leaves are often found in different shapes and sizes. The veins go from the central midrib to the edge of the leaf, crossing and joining to form a netted pattern all over the leaf. If dicotyledonous seed is divided then we can see two different parts called radicle and plumule. Radicle transforms into roots and plumule transform into a stem. When a seed is about to germinate endosperm stores food in it. Many seeds don't have endosperm and they are called non-endospermic seed. Gram and pea are non-endospermic seeds.

The stems of dicots are usually tough. They can grow wider each year and are often branched. They sometimes have stipules at the base of the leaf. The root is often a single long tap root with smaller roots growing from it. The roots of dicots are usually short and stringy. Dicots often have bulbs.

The difference between Monocotyledonous and Dicotyledonous seed.
S.N Monocotyledonous seed Dicotyledonous seed
1. It has single cotyledon. It has two cotyledon.
2. It usually has endosperm. It usually doesn’t have endosperm.
3. Hilum and micropyle cannot be seen by naked eyes. Hilum and micropyle can be seen by naked eyes.
4. Plumule is very small. Plumule is very big.
5. Most monocots are small herbaceous plants. Dicots come in all shapes and sizes.
6. In monocots, the seed pod usually has three parts, because the carpel that they grew from has three parts. The seed pods of dicots can have just one part or many parts.

Lesson

Living-Beings

Subject

Science

Grade

Grade 8

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