Pinus seed cannot germinate and establish without fungal association. (2) its seeds contain inhibitors that prevent germination. of questions : 180 Important : National Eligibility-cum-Entrance Test Sample Test will get started as soon as you click on the start button. This residual, persistent nuclelus is the (1) pericarp (2) perisperm (3) chalazosperm (4) mesosperm. Q21. Which part of the plant contains sporogenous tissue? Ans. Thus perisperm is diploid while endosperm is a triploid tissue. This residual, persistent nucellus is the; Integuments of ovules harden as tough protective seed; The micropyle remains as a small pore in the seed coat. B) perisperm done clear. The pollination of two flowers on different plants is known as (1) xenogamy (2) geitonogamy (3) cleistogamy (4) dichogamy. Both perisperm and endosperm are nutritive layers. Perisperm is residual persistent nucellus of seed prior to fertilization while endosperm develops when one of the sperm cells fuses with two haploid polar nuclei. 14. Thiobacillus is a group of bacteria helpful in carrying out: (1) Chemoautotrophic fixation (2)Nitrification Residual, persistent nucellus present in some seeds is known as: a) scutellum b) perisperm c) tapetum d) coleoptile Q22. Why is apple called a false fruit? This residual, persistent nuclelus is the (1) pericarp (2) perisperm (3) chalazosperm (4) mesosperm Sexual Reproduction in Flowering Plants. The measured value of length of a simple pendulum is 20 cm known with 2 mm accuracy. Occasionally, in some seeds such as black pepper and beet, remnants of nucellus are also persistent. 1) False fruit: Other than ovary, thalamus taking part in fruit formation 2) Parthenocarpic fruits: fruits developed without fertilization Ans: 4 … In some seeds, reminants of nucellus are also presistent. Duration : 3 Hours No. Residual, persistent nucellus present in some seeds is known as. This is because : (1) it has very hard seed coat. It is present in beet, black pepper etc. Persistent nucellus in the seed is known as: (1) Perisperm (2) Hilum (3) Tegmen (4) Chalaza Ans : 1 Hints: Persistent Nucellus in the seed called peri sperm. Morphology of Flowering Plants. Ans. 27. Occasionally, in some seeds such as black pepper and beet, remnants of nucellus are also persistent. In a monocot leaf stomata are present. Stilt roots are found in. Residual, persistent nucellus present in some seeds is known as. a) pollen b) stamen c) microspores d) young anther This residual, persistent nucellus is the perisperm. Perisperm is the residual persistent nucellus and pericarp is covering of fruit wall (Q12) why Apple is called as false fruit ?what parts of flower formed the fruit? (a) : (d) Perisperm is the residual persistant nucellus, while pericarp is the fruit wall derived from the ovary wall. 30 Perisperm i.e., residual persistent Nucellus is seen in 1) Black pepper Ans;4 2) Beet 3)Castor 4) Both 1 and 2 31 Find the mismatch. C) tapetum done clear. Answer: In apple, thalamus of the flower also contributes in the formation of fruit along with the ovary, hence it is called a false fruit. Integuments of ovules harden as tough protective seed coats (Figure 2.15a). D) coleoptile done clear. The time for 50 oscillations was measured to be 40 s with Is resolution. (4) 15. Number of attempts : 01 National Eligibility-cum-Entrance Test 2020 Paper Exam Pattern: To complete the paper, 3 hours will be allotted. Question 12. 6. 21. Gametogenesis refers to the process of. Persistent nucellus in the seed is known as (1) Hilum (2) Tegmen (3) Chalaza (4) Perisperm Ans. A) scutellum done clear. 7. 5. 26. Which parts of the flower forms the fruit? Fruits developed from other parts of ovary is known as false fruits . Human Reproduction. In some seeds, reminants of nucellus are also presistent. This facilitates entry of oxygen and water into the seed during germination.