521. Gibberellins may be substituted for ___________ light, therefore promote flowering in long day plants?
✅ B. Red
Option A: White Option B: Red Option C: Blue Option D: Green Correct Answer : Red Read more
Biology MCQs – Page 27
522. Which of the following is antagonist to Auxin in terms of promotion of stem growth______________?
✅ C. Abscisic Acid
Option A: Gibberellins Option B: Cytokinins Option C: Abscisic Acid Option D: none of these. Correct Answer : Abscisic Acid Read more
523. Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering______________?
✅ A. Gibberellins
Option A: Gibberellins Option B: Cytokinins Option C: Auxins Option D: Ethene. Correct Answer : Gibberellins Read more
524. The only promoter of leaf senescence in the following plant hormones is________________?
✅ D. Abscisic Acid
Option A: Gibberellins Option B: Cytokinins Option C: Auxins Option D: Abscisic Acid Correct Answer : Abscisic Acid Read more
525. Which of the following is used in brewing industry to promote malting_______________?
✅ A. Gibberellins
Option A: Gibberellins Option B: Cytokinins Option C: Auxins Option D: Abscisic Acid Correct Answer : Gibberellins Read more
526. Maize is an example of_________________?
✅ A. Monocot
Option A: Monocot Option B: Dicot Option C: Gymnosperms Option D: none of these Correct Answer : Monocot Read more
527. Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched
✅ B. Dichotomously
Option A: Isotomous Option B: Dichotomously Option C: Trichotomously Option D: Multichotomously Correct Answer : Dichotomously Read more
528. Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls?
✅ C. Sphenopsida
Option A: Psilopsida Option B: Lycopsida Option C: Sphenopsida Option D: Prteropsida Correct Answer : Sphenopsida Read more
529. Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________?
✅ B. Lycopsida
Option A: Psilopsida Option B: Lycopsida Option C: Sphenopsida Option D: Prteropsida Correct Answer : Lycopsida Read more
530. Which of the following tracheophytes are leafless?
✅ A. Psilopsida
Option A: Psilopsida Option B: Lycopsida Option C: Sphenopsida Option D: Prteropsida Correct Answer : Psilopsida Read more
531. The part of sporophyte which is called sporangium is____________?
✅ A. Capsule
Option A: Capsule Option B: Foot Option C: Stalk Option D: None of these Correct Answer : Capsule Read more
532. Monocots are characterized by___________?
✅ B. Number of sepals and petals are 3 or multiple of 3
Option A: Number of sepals and petals are 2 or multiple of 2 Option B: Number of sepals and petals are 3 or multiple of 3 Option C: Number of sepals and petals are 4 or multiple of 4 Option D: Number of sepals and petals are 5 or multiple of 5 Correct Answer : Number of sepals and petals… Read more
533. The first cell of the sporophyte generation is______________?
✅ A. Oospore
Option A: Oospore Option B: Spore mother cell Option C: Spore Option D: Gamete Correct Answer : Oospore Read more
534. Which of the following statement about dicots is incorrect _________________?
✅
Option A: They have 4 or 5 sepals and petals or their multipl Option B: E. Option C: B. They have parallel vein pattern on their leaves Option D: C. They are both herbaceous and woody Correct Answer : They have parallel vein pattern on their leaves Read more
535. Microspore of a seed plant that contain male gametophyte including the gamete is called_______________?
✅ A. Pollen grain
Option A: Pollen grain Option B: Ovule Option C: Microgametophyte Option D: Microsporangium Correct Answer : Pollen grain Read more
536. Of the following four options which one is most advanced?
✅ A. Anthoceropsida
Option A: Anthoceropsida Option B: Bryopsida Option C: Hepaticopsida Option D: None of these Correct Answer : Anthoceropsida Read more
537. In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________?
✅ B. Meiosis
Option A: Mitosis Option B: Meiosis Option C: Both depending upon the conditions Option D: None of these Correct Answer : Meiosis Read more
538. In Hornworts the band of meristematic tissue is found near_____________?
✅ D. At junction of A & B
Option A: Foot Option B: Gamete producing region Option C: Spore producing region Option D: At junction of A & B Correct Answer : At junction of A & B Read more
539. Sporophyte is____________?
✅ C. Diploid
Option A: Monoploid Option B: Haploid Option C: Diploid Option D: Polyploidy Correct Answer : Diploid Read more
540. Which of the following plant group first formed true leaves________________?
✅ B. Lycopsida
Option A: Psilopsida Option B: Lycopsida Option C: Sphenopsida Option D: Pteropsida Correct Answer : Lycopsida Read more