NCERT LINE BY LINE – Page 10

NCERT-Camillo Golgi (1898) first observed densely stained reticular structures near the nucleus. These were later named Golgi bodies after him

CELL: THE UNIT OF LIFE, NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

Golgi, Lysosome and Vacuole Line 1: Camillo Golgi (1898) first observed densely stained reticular structures near the nucleus. Explanation: This line introduces the historical context by mentioning Camillo Golgi, who first observed these structures in 1898. These structures were later named Golgi bodies or Golgi apparatus after him. Enrichment: Early microscopes did not have the […]

NCERT-Camillo Golgi (1898) first observed densely stained reticular structures near the nucleus. These were later named Golgi bodies after him Read More »

NCERT-NEET-LINE BY LINE-Cell WallAs you may recall, a non-living rigid structure called the cell wall formsan outer covering for the plasma membrane of fungi and plants.While each of the membranous organelles is distinct in terms of its structure and function, many of these are considered together as an endomembrane system because their functions are coordinated

CELL: THE UNIT OF LIFE, NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

The Pistil, Megasporangium (Ovule) and Embryo Sac Line 1: As you may recall, a non-living rigid structure called the cell wall forms an outer covering for the plasma membrane of fungi and plants. Explanation: This line reminds you that plant and fungal cells have a cell wall external to the plasma membrane (cell membrane). This

NCERT-NEET-LINE BY LINE-Cell WallAs you may recall, a non-living rigid structure called the cell wall formsan outer covering for the plasma membrane of fungi and plants.While each of the membranous organelles is distinct in terms of its structure and function, many of these are considered together as an endomembrane system because their functions are coordinated Read More »

NCERT-Seed-In angiosperms, the seed is the final product of sexual reproduction.Seeds offer several advantages to angiosperms. Firstly, since reproductive processes such as pollination and fertilisation are independent of water, seed formation is more dependable

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

The Pistil, Megasporangium (Ovule) and Embryo Sac Line 1: In angiosperms, the seed is the final product of sexual reproduction. Explanation: In the world of flowering plants (angiosperms), sexual reproduction culminates in the formation of a seed. This seed is essentially a fertilized ovule (egg) that has undergone a remarkable transformation. Line 2: It is

NCERT-Seed-In angiosperms, the seed is the final product of sexual reproduction.Seeds offer several advantages to angiosperms. Firstly, since reproductive processes such as pollination and fertilisation are independent of water, seed formation is more dependable Read More »

NCERT-Add on-Pollen-pistil Interaction

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

Pollen-pistil Interaction Pollen-Pistil Interaction: Understanding the Dance of Reproduction In the intricate world of flowering plants, the interaction between pollen and the pistil orchestrates the delicate ballet of reproduction. This interaction, crucial for successful fertilization, involves a complex dialogue between the male gametophyte (pollen) and the female reproductive structure (pistil). Let’s unravel the steps of

NCERT-Add on-Pollen-pistil Interaction Read More »

NCERT-Pollen-pistil Interaction

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

The Pistil, Megasporangium (Ovule) and Embryo Sac Line 1: Pollen-pistil Interaction: Pollination does not guarantee successful fertilization. Explanation: While pollination successfully transfers pollen grains to the stigma, it doesn’t guarantee these grains will be compatible with the pistil. Line 2: Often, pollen of the wrong type (incompatible) also lands on the stigma. Explanation: Pollen grains

NCERT-Pollen-pistil Interaction Read More »

NCERT-DOUBLE FERTILISATION and POST-FERTILISATION : STRUCTURES AND EVENTS

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

The Pistil, Megasporangium (Ovule) and Embryo Sac Line 1: After entering one of the synergids, the pollen tube releases the two male gametes into the cytoplasm of the synergid. Explanation: Imagine the pollen tube as a long, thin tube that has traveled from the stigma down the style and finally reached the ovule within the

NCERT-DOUBLE FERTILISATION and POST-FERTILISATION : STRUCTURES AND EVENTS Read More »

NCERT-Cell-the-unit-of-life-Size-Chart-Cells differ greatly in size, shape and activities

CELL: THE UNIT OF LIFE, NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

Responsive Swipe Table neetplay.com & neetbuddy.com A. Structure B. Size C. Additional Information PPLO (Type of Mycoplasma) 0.1 µm Mycoplasma 0.3 µm Viruses 0.02-0.2 µm Bacteria could be 3 to 5 µm. Max. Size Range Typical Bacteria 1-2 µm Avg. Bacteria Typical Eukaryotic Cell 10-20 70S Ribosomes 15 nm by 20 nm Associated with plasma

NCERT-Cell-the-unit-of-life-Size-Chart-Cells differ greatly in size, shape and activities Read More »

NCERT-Female gametophyte : In a majority of flowering plants, one of themegaspores is functional while the other three degenerate.

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

The Pistil, Megasporangium (Ovule) and Embryo Sac Line 1: In most flowering plants, only one megaspore out of the four formed during megasporogenesis is functional. The remaining three degenerate. Explanation: This line describes the outcome of megasporogenesis, the process in which a single functional megaspore develops from the four megaspores produced. The degeneration of the

NCERT-Female gametophyte : In a majority of flowering plants, one of themegaspores is functional while the other three degenerate. Read More »

NCERT-The Secret Life of Pollen: How Long Can It Live?

NCERT LINE BY LINE, pre-class, Sexual Reproduction in flowering Plants / Prof. Siddharth Sanghvi

The Secret Life of Pollen: How Long Can It Live? The Secret Life of Pollen: How Long Can It Live? Have you ever wondered how flowers get fertilized? It all starts with tiny pollen grains, the male reproductive units of plants. But these little guys don’t have forever to find their match. Their lifespan, or

NCERT-The Secret Life of Pollen: How Long Can It Live? Read More »

Comparison of Chordates and Non-chordates

NCERT LINE BY LINE, pre-class / Prof. Siddharth Sanghvi

Comparison of Chordates and Non-chordates Comparison of Chordates and Non-chordates S.No. Chordates Non-chordates 1. Notochord present. Notochord absent. 2. Central nervous system is dorsal, hollow and single. Central nervous system is ventral, solid and double. 3. Pharynx perforated by gill slits. Gill slits are absent. 4. Heart is ventral. Heart is dorsal (if present). 5.

Comparison of Chordates and Non-chordates Read More »