🔬 General Science Solved MCQs with Answers

Practice 4010 approved 🔬 General Science questions with verified answers from the 🌐 Current Affairs & GK subject for Pakistan exams.

4010 solved MCQs

Primary function of respiratory system is _______?Answer: Gas exchange Synchronization of reproductive behavior of plants with their environment is done by _____?Answer: Photoperiodism and Vernalization Which is the first plant response against stress?Answer: Stomatal closure A change in the frequency of alleles is population over time is called _______?Answer: Evolution The study of the structure of entire organism and its parts is called _______?Answer: Anatomy Which of the following is necessary for biological nitrogen fixation?Answer: Molybdenum Most common pesticides frequently used are _______?Answer: Organophosphates Which of the following techniques are used for gene editing in plants?Answer: CRISPR-Cas9 Which of the following is best suited method for the production of virus free plants?Answer: Meristem culture What is an allele?Answer: A gene variant at a specific locus Which is a pigment that is part of biological clock system that helps control of flowering?Answer: Phytochromes Which of the following is a bacterium involved in denitrification?Answer: Pseudomonas Ion carries are located in _____?Answer: Cell membrane In plant tissue culture, what does the term ORGANENESIS mean?Answer: Formation of root and shoot from callus culture Photosystem I is located predominantly in the _____?Answer: Unstacked regions of the thylakoid membrane Moss protonema resembles ______?Answer: Multicellular green algae The center of a Moss axis is occupied by ______?Answer: None of these What is a vector?Answer: Disease transmitted by host A bacteriophage can be recognized by its _____?Answer: Tadpole shape Yeast is included in ______?Answer: Ascomycetes Mycelium of Albugo is ______?Answer: Unseptate and multinucleate All fungi are always ______?Answer: Heterotrophs Plants that cannot manufacture their food are known as ______?Answer: Heterotrophs The excretion of Amoeba takes place mainly in ______?Answer: General surface Which of the following is not multicellular?Answer: Chlamydomonas A complete flower is that flower which has ______?Answer: Calyx, corolla, androecium and gynoecium Which fruit is a type of true nut?Answer: Walnut Pneumatophores are usually present in ______?Answer: Mangrove plant Which of the following element is necessary for translocation of sugar in plants?Answer: Boron DNA can be specifically tested by _____?Answer: Feulgen reaction