Which of the following are correct about pteridophytes ?
I. The sporophyte bear sporangia formed on sporophylls.
II. They are frequently grown as ornamentals.
III. They are the first terrestrial plants to forms seeds.
IV . Vascular tissues are present in pteriodophytes.
V. They do not form embryo .

Which of the following is/are correct for gymnosperms ? I. They are heterosporous. II. They are the first vascular plants. III. Possesses fruits. IV. Require water for fertilisation.

Which of the following bonds are formed by removal of water molecule ? I. Peptide bond II. Glycosidic bond III phosphodiester bond IV. Hydrogen bonds

Which of the following bonds are formed by removal of water molecule ? I. Peptide bond II. Glycosidic bond III phosphodiester bond IV. Hydrogen bonds

Which of the following can form cations ?i) 11 Na ii) 15 P iii) 13 Al iv) 17 Cl

Which of the following is correct about apomixis? I. An apomixis is a form of sexual reproduction. II. Apomixis is a mechanism to produce seeds without fertilization. III. Apomictic embryos are similar in their genetic nature. IV. Examples of apomixis are Citrus and mango.

Which of the following is correct about apomixis? I. An apomixis is a form of sexual reproduction. II. Apomixis is a mechanism to produce seeds without fertilization. III. Apomictic embryos are similar in their genetic nature. IV. Examples of apomixis are Citrus and mango.

Which of the following statements is/are correct? I. Striped muscles are in the form of bundles of cells. II. The Pal muscle fibres, which are called fasciculi. III. Skeletal muscles form the largest tissue in the body. IV. Cardiac muscles in the embryo are originated from mesenchyma cell. Choose the option with the correct statement(s).

Which of the following is correct with respect to Plantae ? (i) In plants, antheridia are the female sex organ. (ii) Except algae, all plants bear embryo . (iii) All pants are heterosporous .