What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
16
24
32
32
B.
24
Synergids are two, short-lived, haploid cells lying close to the egg in nature embryosac of flowering plant ovule. While the endosperm is a triploid tissue formed after triple fusion. Thus, if the synergids have 8 chromosomes, the aleurone layer (part of endosperm) will have just triple of that of chromosomes in the synergids i.e, 24 chromosomes.
Biological organisation starts with
submicroscopic molecular level
cellular level
organismic level
organismic level
ICBN stands for
Indian Congress of Biological Names
International Code of Botanical Nomenclature
International congress of Biological Names
Indian Code of Botanical Nomenclature
A plant requires magnesium for
holding cells together
protein synthesis
chlorophyll synthesis
chlorophyll synthesis
Ultrasound of how much frequency is beamed into human body for sonography?
30-45 MHz
15-30 MHz
1-15 MHz
1-15 MHz
If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?
types of pigments present in the cell
nature of stored food materials in the cell
structural organization of thallus
structural organization of thallus
The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of
ATP in small stepwise units
ATP in one large oxidation reaction
Sugars
Sugars
Which one of the following is a fat-soluble vitamin and its related deficiency disease?
Ascorbic acid - Scurvy
Retinol - Xerophthalmia
Cobalamine - Beri-beri
Cobalamine - Beri-beri
For a critical study of secondary growth in plants. which one of the following pairs is suitable?
Sugarcane and sunflower
Teak and pine
Deodar and fern
Deodar and fern
A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?
Blood plasma
Blood serum
Sample from the thoracic duct or lymphatic system
Sample from the thoracic duct or lymphatic system