प्र.7
ऑक्सिन के कार्य लिखिये।
Write the functions of Auxin
अथवा/OR
किण्वन क्या है?
प्र.8
What is Fermentation?
विषम बीजाणुकता क्या है? इसके दो उदाहरण लिखिये।
What is heterospory? Write two examples.
अथवा/OR
प्लेटीहेल्मिन्थिस संघ के लक्षण लिखिये।
प्र.9
Write the characteristics of Phylum Platyhelminthes.
अर्धसूत्री कोशिका विभाजन का महत्त्व लिखिये।
Write the importance of meiosis cell division,
अथवा/OR
Answers
Answer:
Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation
Explanation:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen.
Heterospory is the phenomenon of formation of two types of spores, i.e., smaller microspore and larger megaspore. ... Examples of heterospory are Selaginella, Salvinia and Marsilea, etc.
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.