Plant development 0.0 / 5 ? OtherLife on EarthUniversityNone Created by: MariaC5Created on: 05-01-18 17:48 What is a totipotent cell? A cell that can develop into any part of the adult organism 1 of 45 Most development occurs post-embryogenesis is true of plants or animals? Plants 2 of 45 Plants do not have an indeterminate growth pattern? False 3 of 45 Cell division occurs in meristems, is true for plants or animals? Plants 4 of 45 Hardly any cells are totipotent, is true for plants or animals? Animals 5 of 45 Why do mature seeds undergo regulated desiccation? To protect the embryo 6 of 45 What does regulated desiccation control in mature seeds? When and where germination occurs 7 of 45 What does regulated desiccation produce? A long lived survival capsule 8 of 45 What does ABA regulate? Seed dormancy 9 of 45 What is ABA? A plant hormone 10 of 45 'Endogenous organic compounds that affect growth and development at low concentrations' are what? Plant hormones 11 of 45 What is auxin? A plant hormone 12 of 45 What breaks dormancy and promotes germination? Gibberellins 13 of 45 In germinating cereal seeds, what do gibberellins do? Stimulate break down of starch to feed growing seedling 14 of 45 What is not a nutrient that seeds store for the embryo? Starch 15 of 45 Where does embryogenesis occur? On the parent plant 16 of 45 ABA deficient mutants are --- Viviparous 17 of 45 What two things does shoot elongation require? Gibberellins and Synthesis 18 of 45 Rapid stem elongation that cause GA biosynthesis is called? Bolting 19 of 45 Mendals peas are examples of what? Mutants that cant synthesise GAs and are therefore dwarf or semi dwarf 20 of 45 Rht weat are examples of what? Mutants that cant respond GAs and are therefore dwarf or semi dwarf 21 of 45 How do growth retardants work? By inhibiting GA biosynthesis 22 of 45 Plants make and use many hormones and signalling molecules, true or false? True 23 of 45 Why do responses to hormones vary? Cell type and cell age 24 of 45 What is auxin? Growth plant regulator hormone 25 of 45 Leaf primordia form around the... apical meristem 26 of 45 Shoot branches form around the... axilliary meristem 27 of 45 Root branches form around the... pericycle cells 28 of 45 Auxin stimulates --- and inhibits --- root initiation, root elongation 29 of 45 Cell expansion uses higher or lower auxin concentrations? Lower 30 of 45 Cell division uses higher or lower auxin concentrations? Higher 31 of 45 Toxic effects are due to higher or lower auxin concentrations? Higher 32 of 45 What is cytokinin? A plant hormone that slows down the rate of dying 33 of 45 What plant hormone, along with auxin is important in promoting cell division in meristems? Cytokinin 34 of 45 What can be described as 'unrestricted cell growth and division'? Plant cancer 35 of 45 Tumours are similar to...? Callus 36 of 45 Plants cannot regenerate from callus? False 37 of 45 Ration of auxin: cytokinin determines development? True 38 of 45 A high ratio of auxin:cytokinin determines development of? Roots 39 of 45 A medium ratio of auxin:cytokinin determines development of? Callus 40 of 45 A low ratio of auxin:cytokinin determines development of? Shoots 41 of 45 Plants accumulate water by The roots 42 of 45 Plants transport water by The xylem 43 of 45 Plant conserve water using The waxy cuticles 44 of 45 Transpiration and CO2 uptake are controlled by Stomata 45 of 45
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