Plastids & its types

Duration: 10 min

This video lesson is available to enrolled students.

Return to /learn/RRB-NTPC-COMPLETE-PREPARATION-COURSE/general-awareness/biology/cell-structure-division/asset-plastids-its-types after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. Mathematics: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Probability, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Partnership, Statistics, Arithmetic, Speed Mathematics and Basic Mathematics
  2. General Intelligence & Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, Clerical Aptitude, Verbal Classification
  3. General Awareness: Polity, Evolution of Indian Banking (Banking & Financial Awareness), Physics, Biology, Chemistry, History, Geography, Indian Economy, Static General Knowledge, GK- Current Affairs, NEP 2020, Environment
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a lecture on the classification of plastids, beginning with a hierarchical diagram. The main categories are leucoplasts and chromoplasts. Leucoplasts are described as white-colored plastids that store starch, with examples like rice, sweet potato, and potato. Chromoplasts are colored plastids that store pigments, giving color to fruits and flowers. The video explains that chloroplasts, which are green, are a type of chromoplast. The green color is attributed to the pigment chlorophyll. The lecture further details other pigments, such as carotenoids, which include xanthophylls (yellow) and carotenes (red-orange), and their role in giving color to various plant parts. The visual content is a hand-drawn diagram on a black background, with text written in red and yellow marker.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video begins with a blank screen, then the title 'Type of Plastid' is written in red. A branching diagram is drawn, showing that plastids are divided into two main types: leucoplast and chromoplast. The term 'leucoplast' is written under the first branch, and 'chromoplast' under the second. The diagram is a simple flowchart on a black background, with text written in red marker.

  2. 2:00 – 5:00 02:00-05:00

    The diagram is expanded. Under 'leucoplast', the text 'white colored plastid' is written, and an example is given: 'Amyloplast -> it will store starch (type of carbohydrate)'. Examples of starch storage are listed: 'like in Rice, Sweet potato, Potato'. Under 'chromoplast', the text 'Coloured Plastid' is written. The video then introduces 'Chloroplast' as a type of chromoplast, noting it is green. The question 'why green colour?' is posed, and the answer begins to be written: 'Because it has a pigment called...'.

  3. 5:00 – 9:51 05:00-09:51

    The explanation of the green color continues. The pigment is identified as 'Chlorophyll'. The video then introduces the broader category of 'Carotenoids' in yellow, which are pigments that give colors to things. Three types of carotenoids are listed: 'Xanthophylls - Yellow', 'Carotenes - Red Orange', and 'Chlorophyll - Green'. The diagram is now fully developed, showing the relationship between leucoplasts, chromoplasts, and their subtypes, with examples and explanations for their functions and colors.

The video provides a clear, structured explanation of plastid types using a visual flowchart. It starts with the main division of plastids into leucoplasts and chromoplasts. It then elaborates on leucoplasts as colorless storage organelles, specifically mentioning amyloplasts that store starch in common food sources. The focus then shifts to chromoplasts, which are colored and store pigments. The video uses chloroplasts as a key example of a chromoplast, explaining their green color is due to chlorophyll. It further expands the concept by introducing carotenoids as a class of pigments, detailing their different colors (yellow, red-orange) and their role in plant coloration, thus providing a comprehensive overview of plastid diversity and function.

Loading lesson…