Given alongside is the figure of an organism. Study the same and answer the following questions.
(i) Identify the organism.
(ii) Is it a plant/ animal ? Give reason in support of your answer.
(iii) Label the guidelines 1 to 6 shown in the figure.
(iv) Which kingdom does it belong to ?
(v) Write one important role of the parts shown as 3 and 6.
(i) The organism shown in the given figure is Amoeba.
(ii) No, Amoeba is neither a plant nor an animal. Amoebas lack chlorophyll and the ability to photosynthesize, unlike plants. Animals have specialized tissues and organs, which amoebas lack. Hence, Amoeba don't fall under either category.
(iii) The guidelines 1 to 6 are:
1 → Food Vacuole
2 → Nucleus
3 → Pseudopodium
4 → Cell Membrane
5 → Cytoplasm
6 → Contractile Vacuole
(iv) Amoeba is a single-celled organism classified under the Kingdom Protista.
(v) Part 3 (Pseudopodium) — Pseudopodium is the organ of locomotion in an Amoeba. It helps amoeba move in the direction it wants to move in.
Part 6 (Contractile Vacuole) — Excess ammonia (waste) and water gets expelled out of the body of Amoeba from Contractile Vacuole.
Chapter 1: Classification of Plants — ICSE Class VII Biology Notes
Complete ICSE Class VII Biology study guide on Classification of Plants covering all five divisions from Thallophyta to Angiosperms. Learn the differences between monocots and dicots, understand vascular and non-vascular plants, and master plant division features with examples.
Key Concepts and Topics
Topics covered: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms, Monocots, Dicots
Weightage: Approximately 8 marks in the exam
Important Points to Remember
- Five divisions of plant kingdom from simplest to most complex
- Thallophyta: no true roots/stems/leaves, simple thallus body
- Bryophyta: amphibians of plant world, need water for reproduction
- Pteridophyta: first plants with vascular tissue, reproduce by spores
- Gymnosperms: naked seeds in cones, needle-like leaves
- Angiosperms: flowering plants, seeds in fruits, most diverse group
- Monocots vs Dicots: cotyledons, venation, roots, flower parts
Frequently Asked Questions
Q: What are the five divisions of the plant kingdom?
A: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms.
Q: Why are bryophytes called amphibians of the plant world?
A: Because they live on land but need water for reproduction, just like amphibians.
Q: How are monocots different from dicots?
A: Monocots have one cotyledon, parallel leaf veins, and fibrous roots. Dicots have two cotyledons, reticulate veins, and tap roots.
Exam Preparation Tips
- Focus on understanding concepts rather than rote memorization
- Practice drawing and labelling diagrams regularly
- Use comparison tables for topics that require differentiation
- Solve previous year questions and practice papers
- Review the chapter notes provided by Bright Tutorials for comprehensive coverage
For complete chapter notes, practice questions, and test papers, contact Bright Tutorials at 9403781999.