[" Which of the followings is an incorrect "],[" statement- "],[[" (1) ""Commelina,"" Viola and ""Oxalis"" have "],[" cleistogamous flowers but not "],[" chasmogamous flower "]],[" (2) Germination of self pollen grains is "],[" (3) "," prevented on stigma of tobacco "],[" Strobilanthus kunthiana is a perennial,"],[" monocarpic plant "],[" (4) All the floral whorls are modified "],[" leaves "]

Which of the following is an outbreeding device ? a. If pollen release and stigma receptivity are not synchronised. b. If the anther and stigma are placed at different positions so that pollen cannot come in contact with the stigma of the same flower. c. Self-incompatibilty which prevents self-pollen (from the same plant) from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil. d. Production of the unisexual flower

Which of the following statement is incorrect for the epidermis? (1) It is the outermost layer of the primary plant body. (2) It is often covered by cuticle externally (3) It is usually multilayered. (4) It is made up of completely arranged cells.

Which of the following statements is incorrect for secondary meristems? (1) They regenerate the parts of grasses damaged by grazers. (2) They are the cylindrical meristems. (3) They occur in the mature regions of roots and shoots. (4) They appear later than primary meristems in the life of a plant.

Which of the following statement for the grasshopper is incorrect ? (1) Male individual is heatrogametic due to two heteromorphic sex chromosomes (2) Sperm determines the sex of offsprings (3) Similar number of autosomes are found in male and female individuals both (4) All eggs contain autosomes as well as X-chromosome.

In which of the following plants, in a flower only 3rd whorl of floral organs are fused with 2nd whorl of floral organs?