Doubtly
@Doubtly · Joined Feb 2021
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- A typical angiosperm embryo sac at maturity is: (1) 8-nucleate and 8-celled (2) 8-nucleate and 7-celled (3) 7-nucleate and 8-celled (4) 7-nucleate and 7-celled (2) 8-nucleate and 7-celled is correct option 2
- Gemmae are present in: (1) Some Liverworts (2) Mosses (3) Pteriodophytes (4) Some Gymnosperms Some Liverworts option 1 Some Liverworts is correct 2
- Match List - I with List - II. (a) Cohesion (i) More attraction in liquid phase option 1 is correct (1) (ii) (iv) (i) (iii) 2
- Diadelphous stamens are found in : (1) China rose and citrus (2) China rose (3) Citrus (4) Pea (4) Pea Diadelphous stamens are found in pea 1
- The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from a diagram called: (1) Net square (2) Bullet square (4) Punnett square is the correct option 2
- Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as (1) Heterosporous (2) Homosorus (3) Heterosorus (4) Homosporous (1) Heterosporous is the correct option 2
- The factor that leads to Founder effect in a population is : (1) Genetic drift (2) Natural selection (3) Genetic recombination (4) Mutation Genetic drift :: 1)Genetic drift is correct option 2
- The term used for transfer of pollen grains from anthers of one plant to stigma of a different Xenogamy is the correct option (2) Xenogamy 2
- Which of the following is an incorrect statement? (1) Nuclear pores act as passages for proteins and RNA molecules (2) Mature sieve tube elements possess as conspicucous nucleus and usual cytoplasmic organelles. is the correct option 1
- Mutations in plant cells can be induced by: (1) Zeatin (2) Kinetin (3) Infrared rays (4) Gamma rays Gamma rays Correct option is 4 ) Gamma rays 2
- Consider the following statements: I. Higher the taxa, more are the characteristics that members whithin the taxon share. (4) Both I and II are false 2
- Which of the following taxonomic categories are correctly matched to their standard termination of names with respect to biological classification of plants? (2) I, II, III is correct option 2
- What is meant by the "species problem"? (1) The exact definition of species is still controversial. (1) The exact definition of species is still controversial. 2
- The scientific term for biological classification categories is the: (1) Species (2) Taxon (3) Phylum (4) Domain 2) Texon is the correct option 2
- Identify the incorrect statement: (1) Biological names are generally in Latin and written in italics. (3) Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their vernacular ori... 1
- The most obvious & complicated feature of all living organisms is: (1) The ability to sense their surroundings or environment and respond (1) The ability to sense their surroundings or environment and respond to these environmental stimuli. 1
- Consider the following two statements: I. Cellular organization of the body is the defining feature of life forms. (3) I is true but II is false 2
- Consider the following two statements: I. In the single-celled organisms, we are not very clear about the usage of the two terms – growth and reproduction. 1. Both I and II are true and II explains I is the correct option 1