Biology
Class 10
Lakhmir Singh
1
Chapter 1: Life Processes
281 questions
2
Chapter 2: Control and Coordination
182 questions
3
Chapter 3: How do Organism Reproduce?
183 questions
Q1
Question 89:
A filamentous alga X is found in ponds, lakes and slow-moving streams. The filament of this alga simply breaks into two (or more) pieces on maturing and each piece then grows to become a complete new alga.
(a) Name an alga which X is likely to be.
(b) What is the colour of X?
(c) What is the method of forming new algae by the breaking of parent alga known as?
(d) An Amoeba also breaks up to form two daughter Amoebae. What is the difference in the splitting of Amoeba and splitting of this alga as a method of reproduction?
(e) Name one marine animal which reproduces in the same way as alga X.
(a) Name an alga which X is likely to be.
(b) What is the colour of X?
(c) What is the method of forming new algae by the breaking of parent alga known as?
(d) An Amoeba also breaks up to form two daughter Amoebae. What is the difference in the splitting of Amoeba and splitting of this alga as a method of reproduction?
(e) Name one marine animal which reproduces in the same way as alga X.
Q2
Question 90:
When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
Q3
Question 1:
Where are a plant's sex organs located?
View all question4
Chapter 4: Heredity and Evolution
145 questions
5
Chapter 5: Our Environment
141 questions
6
Chapter 6: Management of Natural Resources
70 questions
Question
Question 90:
When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
Views: 5,345 students
Text solution
Verified
Answer:
(a) The plant X is Bryophyllum.
(b) The entities, Y, present on the leaves of X are known as buds.
(c) Other than X, Begonia can also be reproduced by its leaves.
(d) Money plant can be propagated from its broken stem similar to plant X.
(e) Buds are present in the dry stems of the old grass lying in the fields. These buds get activated after a spell of shower, and start producing new grasses.
(b) The entities, Y, present on the leaves of X are known as buds.
(c) Other than X, Begonia can also be reproduced by its leaves.
(d) Money plant can be propagated from its broken stem similar to plant X.
(e) Buds are present in the dry stems of the old grass lying in the fields. These buds get activated after a spell of shower, and start producing new grasses.
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Practice more questions from Biology (Lakhmir Singh)
Q1
Question 89:
A filamentous alga X is found in ponds, lakes and slow-moving streams. The filament of this alga simply breaks into two (or more) pieces on maturing and each piece then grows to become a complete new alga.
(a) Name an alga which X is likely to be.
(b) What is the colour of X?
(c) What is the method of forming new algae by the breaking of parent alga known as?
(d) An Amoeba also breaks up to form two daughter Amoebae. What is the difference in the splitting of Amoeba and splitting of this alga as a method of reproduction?
(e) Name one marine animal which reproduces in the same way as alga X.
(a) Name an alga which X is likely to be.
(b) What is the colour of X?
(c) What is the method of forming new algae by the breaking of parent alga known as?
(d) An Amoeba also breaks up to form two daughter Amoebae. What is the difference in the splitting of Amoeba and splitting of this alga as a method of reproduction?
(e) Name one marine animal which reproduces in the same way as alga X.
Q2
Question 90:
When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
Q3
Question 1:
Where are a plant's sex organs located?
View allPractice questions from Biology (Lakhmir Singh)
Question 1
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Question 2
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(a) sepal and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style
Question 3
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(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of B contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
Question 4
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(i) Amoeba and Yeast
(ii) Yeast and Hydra
(iii) Hydra and Plasmodium
(iv) Corals and Sponges
(a) (i) and (ii)
(b) only (ii)
(c) (i) and (iii)
(d) (ii) and (iv)
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| Question Text |
Question 90:
When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants. (a) Name a plant which X could be. (b) What are the entities Y present on the leaves of X known as? (c) Name a plant other than X which can be reproduced from its leaves. (d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X. (e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains. |
| Topic | How do Organism Reproduce? |
| Subject | Science |
| Class | Class 10 |
| Answer Type | Text solution:1 |
| Upvotes | 76 |
