Quick Answer: What are leaf spines for Class 6?

What are leaf spines 6?

Typically these are thin, dry, stalkless, membranous structures, usually brownish in colour or sometimes colourless. Their function is to protect the axillary bud that they bear in their axil. Sometimes scale-leaves are thick and fleshy, as in/onion; then their function is to store up water and food.

What is leaf blade short answer?

1. leaf blade – especially a leaf of grass or the broad portion of a leaf as distinct from the petiole. blade. foliage, leaf, leafage – the main organ of photosynthesis and transpiration in higher plants.

What is the function of leaf spines?

In certain plants entire or the parts of the leaves are modified into sharp and pointed structure called as leaf spines. They are exogenous in origin. It can act as defensive structure since it can protect the plants against grazing animals. It also reduces transpiration.

Which plants have spines instead of leaves?

cactus have spines instead of leaves to prevent a loss of water from the surface of the leaf. Cactus has spines rather than leaves so as to save water.

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What are the 4 types of leaves?

There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant.

What are the 3 types of leaves?

Leaves are classified as either alternate, spiral, opposite, or whorled. Plants that have only one leaf per node have leaves that are said to be either alternate or spiral. Alternate leaves alternate on each side of the stem in a flat plane, and spiral leaves are arranged in a spiral along the stem.

How many kinds of leaves are there?

76 Types of Leaves With Names and Pictures.

What are the 3 main functions of leaves?

The leaves perform three main functions such as manufacture of food, interchange of gases between the atmosphere and the plant body and evaporation of water.

What is the function of veins in leaves?

The veins in a leaf represent the vascular structure of the organ, extending into the leaf via the petiole and providing transportation of water and nutrients between leaf and stem, and play a crucial role in the maintenance of leaf water status and photosynthetic capacity.

Which is the main function of fruit?

The main function of fruit is to disperse and protect the seeds.

What is the main function of guard cells?

Guard cells use osmotic pressure to open and close stomata, allowing plants to regulate the amount of water and solutes within them. In order for plants to produce energy and maintain cellular function, their cells undergo the highly intricate process of photosynthesis . Critical in this process is the stoma.

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What is the meaning of scale leaf?

scale leaf. noun botany. a modified leaf, often small and membranous, protecting buds, etc. any of the leaves of some conifers, such as cypresses, that are small and tightly pressed to the stem.