Icse biology class 6 plant life by viva education- Here we will solve the extra question of Chapter 1 Plant life i.e “review your Learning”. so students write it down in your copy and prepare these extra questions for your upcoming exam. so without wasting our time let’s begin “Icse biology class 6 plant life by viva education”
Icse biology class 6 plant life by viva education-Extra question
Biology is a subject that helps the student for preparing themselves for medical and other competitive examinations. here queryexpress.com provides a chapter by chapter solution of the Icse class 6 biology. so let’s begin with Icse biology class 6 plant life by viva education chapter 1
Icse biology class 6 plant life by viva education-
Review Your Learning
A. Answer in one word.
1. Thick vein in the middle of the lamina
2. Venation in which veins and veinlets are irregularly distributed over the entire lamina
3. Insectivorous plant with highly segmented leaves that form bladders
4. A process in which oxygen is released by leaves
5. A stalk by which flowers are attached to the stem
Answer-(midrib, reticulate, bladderwort, photosynthesis, pedicel)
Icse biology class 6 plant life by viva education-Error correction
B. Identify errors in the given statements. Circle the incorrect word and write the correct word in the blank.
1. In some plants, a leaf is directly attached to the petiole without a leaf stalk.
2. In an alternate arrangement, two leaves arise from the same node but are opposite each other.
3. Many minute pores called stomata are present on the upper surface of the leaves.
4. In a unisexual flower, both male and female reproductive parts are present.
5. Flowers of plants like Hydrilla are pollinated by wind.
Answer-( Stem, Opposite, Lower, Bisexual, Dandelion)
Icse biology class 6 plant life by viva education-match the column
C. Match the column
|Column A||Column B|
|1. Wide flat portion of a leaf||a) Lamina|
|2. Part of the flower that produces pollen grains||b) Fertilisation|
|3. Green leaf like structures protecting the inner whorls of the flower||c) Ovule|
|4. The fusion of male and female gametes||d) Calyx|
|5. Part of a flower that develops into a seed||e) Anther|
|Column A||Column B|
|1. Wide flat portion of a leaf||a) Lamina (1)|
|2. Part of the flower that produces pollen grains||b) Fertilisation (4)|
|3. Green leaf like structures protecting the inner whorls of the flower||c) Ovule (5)|
|4. The fusion of male and female gametes||d) Calyx (3)|
|5. Part of a flower that develops into a seed||e) Anther (2)|
Icse biology class 6 plant life by viva education- Answer in short
1. Classify leaves on the basis of margin.
Answer- Classification of leaves on the basis of their margin are:-
- Complete or entire margin ( Mango and Banyan)
- Toothed or serrate margin ( Rose and China rose)
- Wavy Margin ( Polyalthia and Ashoka)
- Spinose margin ( Prickly poppy)
2. What is the function of veins in a leaf?
Answer-The main function of the vein in a leaf is to provide support and transport water and food to the leaf
3. Name any three insectivorous plants.
Answer- Three insectivorous plants are- Pitcher plant, venus flytrap and Bladderwort
4. Draw a diagram to show different parts of a flower.
5. Give any two characteristics of flowers pollinated by wind.
Answer- Characteristics of flowers pollinated by wind are:-
- The flowers are small and are not brightly coloured or attractive
- They don’t produce nectar and don’t have any smell
- The stigma is large and feathery to easily catch the pollen grains flying in the wind.
Icse biology class 6 plant life by viva education-Plant life
E. Answer in detail.
I_ Classify leaves on the basis of shape and lamina. Give examples of each.
Answer- Classification of leaves on the basis of their shape are:-
- Needle-shaped (Pine and Onion)
- Oval or elliptical ( Apple and Guava)
- Oblong (Banana)
- Circular ( Totus and lily)
- Heart shaped ( Betel and Tinospora)
Classification of leaves on the basis of their lamina are:-
Simple leaf- in a simple leaf, there is a single leaf blade or lamina. Example mango, banana and guava
Compound leaf- in a compound leaf, the lamina is decided into many small parts called leaflets. neem and Rose plant are examples of compound leaves.
2. Define venation. Explain its types with the help of neat diagrams.
Answer- Venation is defined as the arrangement of veins and veinlets on the lamina of a leaf is called venation. venation is of two types such as:-
- Reticulate venation- here the veins and veinlets are irregularly distributed over the entire lamina that looks like a network or web. Guava and mango are examples of reticulate venation.
- Parallel venation- here veins raise from the midrib and run parallel to each other. Banana and grass are examples of parallel venation
3. Some leaves are modified to perform special functions. Explain.
Answer- Apart from preparing food some leaves are modified to perform special functions such as-
leaves of some plants are modified into thin, coiled, thread-like structures called tendrils. these tendrils are very sensitive to touch. when these tendrils come in contact with an object, they coil around it and help the plant climb. Example- grapevine and pea plants.
in some plants, the leaves are modified into sharp, pointed structures called spines. these spines protect the plant from grazing animals. Examples-Cactus, prickly pear
In some plants, the leaves get modified as a thick and fleshy scale that stores food and water and also protects the bud. Example- Onion and Ginger
4. What is pollination? Explain its types.
Answer- pollination is defined as the transfer of pollen grains from the anther of a flower to the stigma of the same flower or another flower of the same species. pollination is of two types such as:-
- Self-pollination- In this type of pollination the pollen grains are transferred from anther to the stigma of the same flower or different flowers of the same plant.
- Cross-pollination- In this type of pollination, the pollen grains are transferred from the anther of a flower to the stigma of a flower of another plant but of the same species.
5. Define germination. What are the conditions required for the germination of seed?
Answer- Germination is defined as the process where seeds germinate to produce a new plant in the presence of water, air, temperature and light. or germination is the process by which the dormant embryo within the seed becomes active and grows into a new plant is called germination.
Germination takes place in the presence of water, air, temperature and light. hence the conditions that help the seed to germinate are moisture and sunlight