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Science [3 Marks Each] QUE-ANS

Getting to Know Plants · Gujarat Board (GSEB) STD 6 (GSEB - English Medium). 8 questions.

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[3 Marks Each] QUE-ANS

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8 questions · timed · auto-graded

Question 13 Marks
Explain the types of plants on the basis of their height.
Answer
Plants can be classified into three types on the basis of their height:
$1$. Herb $2$. Shrub $3$. Tree $1$. Herb : Herbs have very soft, green and weak stem. Herbs are very small non-bushy plants. Their height is usually less than $1-1/2-$ metres. They don’t have many branches. Example of herbs — Basil, coriander, periwinkle, wheat, bajri, maize, etc.
$2.$ Shrub : A shrub is a woody plant which is smaller than a tree and has several main stems arising at or near the ground. Shrubs have hard stems in comparison to herbs and bear many branches. Example of shrubs — Rose, lemon plant, china rose, henna, pomegranate etc.
$3.$ Tree : Trees have single woody stem with many branches attached to it. Trees are very big plants with thick, hard and brown stem. The branches are generally attached to the upper part of the stem. Example of trees — Mango tree, banyan tree, coconut tree, asopalav, etc.
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Question 23 Marks
Classify the roots of loliowing plants into taproots and fibrous roots: Mango, wheat, ymca, maize, tulsi, banyan, bamboo, neem, sugarcane, coconut, china rose, jowar.
Answer
Plants with taproots : Mango, ymca, tulsi, banyan, neem, china rose. Plants with fibrous roots : Wheat, maize, bamboo, sugarcane, coconut, jowar.
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Question 33 Marks
Classify the following plants into herb, shrub and tree: Neem, tulsi, china rose, guava, banyan, via, maize, mango, oleander, rose, henna, asopalav pomegranate marigold custard apple, bajri, acacia, pipal.
Answer
Herb : Tulsi, ymca, maize, rose, marigold, baJri. Shrub : China rose, guava, oleander, henna, pomegranate, custard apple. Tree : Neem, banyan, mango, asopalav, acacia, pipal.
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Question 43 Marks
Draw a neat diagram of pistil and show its parts. Explain each of its part in short.
Answer
Pistil is the female reproductive organ of a flower. It is the innermost part of a flower. The three parts of a pistil are :
$(1)$ Stigma
$(2)$ Style
$(3)$ Ovary.
$(1)$ Stigma: The sticky tip of a pistil, on which pollen deposited at the beginning of pollination gets. Pistil is the female reproductive organ of a flower. It is the innermost part of a flower. The three parts of a pistil are :
$(1)$ Stigma
$(2)$ Style
$(3)$ Ovary.
$(1)$ Stigma: The sticky tip of a pistil, on which pollen deposited at the beginning of pollination gets.
$(2)$ Style : It is a long, slender stalk that connects the stigma and the ovary.
$(3)$ Ovary: This is the thickened lower part of the flower which holds its major organs. Small bead like particles known as pollen grains are found inside the ovary.
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Question 53 Marks
Explain the structure of an ovary.
Answer
It is the lowermost and swollen part of the pistil. It is an important part of the female reproductive system. If an ovary is cut longitudinally or transversally small bead like structures called ovules are seen. 
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Question 63 Marks
Draw a neat and labelled diagram of a stamen and explain its parts.
Answer
Stamen is the male reproductive organ of a flower. A flower may have more than one stamen. It is generally covered by the petals. The two main parts of a stamen are : $(1)$ Anther $(2)$ Filament.  The sac like top structure of a stamen is called anther and the long stick like structure on which the anthers rest is called filament.
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[3 Marks Each] QUE-ANS - Science STD 6 Questions - Vidyadip