A Botany practice set focused on plant biology topics such as plant anatomy, physiology, classification and reproduction. Attempt the questions to gauge your understanding, then go through the answers to clear up anything you got wrong. Suited to steady topic-wise revision.
In a monohybrid cross, Mendel observed a phenotypic ratio of 3:1 in the F2 generation. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Phycomycetes reproduce using motile zoospores (or non-motile aplanospores) produced inside sporangia. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Gibberellins increase internode length in sugarcane, thereby increasing sugar yield per plant. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Bt toxin is activated in the alkaline gut of insect larvae, not in an acidic environment. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Increased reproduction rate helps populations survive but does not directly protect individual prey from predators. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Meiosis produces genetically varied lls due to crossing over and independent assortment, not identical ones. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Cytokinins are produced in root tips and promote ll division and shoot growth. They delay, not promote, leaf senescence. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Genetic variation is a part of genetic diversity, whereas ecosystem diversity includes different types of ecosystems such as deserts, rainforests, and wetlands.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Chromosome segregation occurs during mitosis, whereas interphase is mainly for growth, DNA replication, and preparation for division. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
CAM plants fix CO2 at night and store it as organic acids to minimize water loss. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Endemic species are restricted to specific geographic locations and are not widespread across multiple continents. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Ethylene is known to promote, not delay, fruit ripening, especially in climacteric fruits. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
