Unit 3 - Practice Quiz

1 Which of the following is a primary merit of sexual propagation?

2 Plants raised from seeds usually have a longer juvenile phase compared to vegetatively propagated plants. This is a known:

3 Which type of dormancy is caused by an impermeable or hard seed coat?

4 The process of mechanically or chemically altering a hard seed coat to make it permeable to water is called:

5 Moist-chilling treatment given to seeds to overcome physiological dormancy is known as:

6 In which type of germination do the cotyledons remain below the soil surface?

7 Which plant hormone is most commonly used to induce rooting in stem cuttings?

8 What is the primary function of a Mist Chamber in propagation?

9 Which propagation method involves removing a ring of bark from a branch while it is still attached to the parent plant and wrapping it with moist media?

10 The alignment of which tissue is most critical for a successful graft union?

11 Which of the following is a potential demerit of asexual (vegetative) propagation?

12 Polyembryony, where a single seed produces multiple seedlings, is commonly observed in:

13 Which chemical is primarily used for the Tetrazolium (TTC) test?

14 A seed that cannot withstand drying and low temperatures, and must be planted immediately after extraction, is called:

15 What is the term for the plant part that provides the root system in grafting?

16 Which grafting method is typically used to repair trees that have been damaged at the base (e.g., by rodents)?

17 Stooling or Mound Layering is the commercial method of propagation for:

18 In the context of propagation media, Vermiculite is best known for:

19 What is Top Working?

20 Which type of budding is most successful when the bark 'slips' easily (i.e., active growth)?

21 When a scion overgrows the rootstock or vice versa, resulting in a distinct difference in diameter at the union, it is often a sign of:

22 The use of an Interstock is primarily to:

23 Which of the following is a characteristic of plants grown from seeds (sexual propagation)?

24 What is the primary role of Perlite in a propagation mix?

25 Which substance is often responsible for chemical inhibition in seeds (Physiological dormancy)?

26 The 'East Malling' (e.g., M9) series of apple rootstocks became famous for introducing what characteristic to the scion?

27 Which method of layering involves bending a branch to the ground and covering a portion of it with soil while the tip remains exposed?

28 In micropropagation (tissue culture), the explant is sterilized and placed on a nutrient medium in conditions that are:

29 Which of the following describes Epigeal Germination?

30 Which grafting technique is also known as 'Tongue Grafting' due to the interlocking cut?

31 The gradual process of transitioning tissue-cultured or greenhouse plants to outdoor environmental conditions is called:

32 What is the phenomenon called when the stock and scion fail to form a successful union or the tree dies prematurely?

33 Which propagation structure utilizes decomposing organic matter (like manure) to generate heat?

34 In Approach Grafting, what is the unique requirement compared to other methods?

35 A Lath House is primarily used for:

36 The breaking of the graft union due to strong wind several years after grafting is a symptom of:

37 Which of the following is a structural modification of a stem used for natural propagation?

38 In cutting propagation, Bottom Heat is applied to:

39 The ability of a single plant cell to regenerate into a whole plant is known as:

40 Chip Budding is often preferred over T-budding when:

41 Which seed viability test involves floating seeds in water?

42 What is the effect of the scion on the rootstock?

43 Which propagation structure is specifically designed to trap solar radiation to create a warmer environment (Greenhouse effect)?

44 Serpentine Layering is a modification of simple layering suitable for plants with:

45 The time required for a seed to germinate is heavily influenced by temperature. The specific temperature range at which the highest percentage of seeds germinate in the shortest time is called:

46 Which of the following is an example of Translocated Incompatibility?

47 When collecting scion wood for grafting, it is generally recommended to use wood that is:

48 Sphagnum moss is widely used in air layering because:

49 Polyethylene sheets used in polyhouses are primarily stabilized against:

50 Rooting of cuttings is often more successful if the cuttings are taken from: