MCQ Bank
Which of the following biomolecules are caused to damage by the ROS?
- A) DNA
- B) All of these
- C) Proteins
- D) Lipids
Biotic Stress can be caused by ____ organism
- A) All given
- B) Fungi
- C) Algae
- D) Bacteria
Which of the following are the Reactive oxygen species (ROS) ?
- A) Superoxide anion
- B) Hydrogen peroxide
- C) Singlet oxygen
- D) All of these
Resistance or sensitivity of plants to stress depends on__________?
- A) Species
- B) Development age
- C) All of these
- D) Genotype
Genetic modification involves the ______________.
- A) Modification of genes
- B) Insertion of genes
- C) Deletion of genes
- D) All of these
when genes from one crop are incorporated into another crop, this process is called___________.
- A) Protoplast Fusion
- B) Transgenisis
- C) Genome Editing
- D) Mutagenesis
Which of the following is a non-enzymatic antioxidant against ROS Defense Machinery?
- A) Ascorbic Acid (AA)
- B) Catalase (CAT)
- C) Ascorbate peroxidase (APX)
- D) Glutathione Reductase (GR)
Which of the following is not used as stress hormones?
- A) Ethylene
- B) None of these
- C) Abscisic acid
- D) Auxins
In presence of light, ___________are the major sources of ROS production?
- A) Golgi apparatus
- B) Mitochondria
- C) Chloroplasts and peroxisomes
- D) Endoplasmic reticulum
_______have been considered as a secondary ROS scavenging system in plants experiencing damage to the photosynthetic apparatus?
- A) Ascorbic Acid (AA)
- B) Carotenoids
- C) α-tocopherol
- D) Flavonoids
Decrease in photo synthesis is the negative effect of __________ on plants
- A) Oxygen
- B) Nitrogen
- C) Ozone
- D) Carbon
Protoplasts are the cells having
- A) Having removed plasma membrane
- B) Intact cell wall
- C) Removed cell wall
- D) non of these
Annually about ______ of the crop productivity is lost owing to various abiotic stress factors.
- A) 12%
- B) 20%
- C) 72%
- D) 42%
Which of the following statement is true regarding Flavonoids?
- A) All of these
- B) Defense against plant pathogens
- C) Providing pigmentation in flowers
- D) Involved in plant fertility
Which of the following Processes is Used to Genetically Modify Crops?
- A) Embryogenesis
- B) oogenesis
- C) Transgenisis
- D) Electrphoresis
________are Glycosylated compounds, classified as either triterpinoids, steroids, or steroidal glycoalkaloids
- A) Saponins
- B) Glucosinolates
- C) Sphingocins
- D) Glycoprotiens
Transgenic organisms are those who have
- A) Genes isolated from bacteria
- B) Genes from other species
- C) All of these
- D) exogenous genes
Protoplasts are the cells having removed__________
- A) Cell wall
- B) Nucleus
- C) Cell membrane
- D) Chloroplast
Heat shock proteins are a specific set of proteins that are induced by ______________
- A) Rapid rise in temperature
- B) Decrease in temperature
- C) All of these
- D) Decrease in heat
The ROS production in plants is localized in the __________?
- A) Chloroplast
- B) Peroxisomes
- C) All of these
- D) Mitochondria