Biology questions
20584 published questions with worked solutions.
- Read the following statements about the vascular bundles : (a) In roots, xylem and phloem in a vascular bundle are arranged in an...
- DNA polymorphism forms the basis of :
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :...
- The appearance of recombination nodules on homologous chromosomes during meiosis characterizes :
- The flowers are Zygomorphic in : (a) Mustard (b) Gulmohar (c) Cassia (d) Datura (e) Chilly Choose the correct answer from the...
- Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted...
- Which one of the following statement is not true regarding gel electrophoresis technique?
- In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to : (a) secretion of secondary...
- Which one of the following plants does not show plasticity?
- Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
- Identify the incorrect statement related to Pollination :
- Which of the following is not a method of ex situ conservation?
- Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves :
- Which one of the following statements cannot be connected to Predation?
- Given below are two statements : Statement I : Cleistogamous flowers are invariably autogamous Statement II : Cleistogamy is...
- Given below are two statements : Statement I : The primary CO_2 acceptor in C_4 plants is phosphoenolpyruvate and is found in the...
- Identify the correct set of statements : (a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea (b)...
- The gaseous plant growth regulator is used in plants to :
- Which one of the following plants shows vexillary aestivation and diadelphous stamens?
- XO type of sex determination can be found in :