Q1: Does "You may place 1 green or blue Digimon card with {{EffectLinkArchetype|Dramon}} from your hand under this Digimon as its bottom digivolution card" in this card's When Digivolving effect activate when DNA digivolving?
Yes, it activates. "You may place 1 green or blue Digimon card with {{EffectLinkArchetype|Dramon}} from your hand under this Digimon as its bottom digivolution card" activates when digivolving normally or when DNA digivolving. The "When DNA digivolving, you may play 1 green or blue Digimon card with {{EffectLinkArchetype|Dramon}} and 12000 DP or less from your hand without paying the cost" part activates only when DNA digivolving.
Lv.7 Examon EX3-074 SEC Mega | Data | Holy Warrior/Royal Knight DNA Digivolution: 0 from green Lv.6 + blue Lv.6[When Digivolving] You may place 1 green or blue Digimon card with [Dramon] in its name from your hand under this Digimon as its bottom digivolution card. When DNA digivolving, you may play 1 green or blue Digimon card with [Dramon] in its name and 12000 DP or less from your hand without paying the cost.[All Turns] [Once Per Turn] When this Digimon becomes suspended, unsuspend it, and suspend 1 of your opponent's Digimon.
Lv.7 Examon EX3-074 SEC Mega | Data | Holy Warrior/Royal Knight DNA Digivolution: 0 from green Lv.6 + blue Lv.6 [When Digivolving] You may place 1 green or blue Digimon card with [Dramon] in its name from your hand under this Digimon as its bottom digivolution card. When DNA digivolving, you may play 1 green or blue Digimon card with [Dramon] in its name and 12000 DP or less from your hand without paying the cost. [All Turns] [Once Per Turn] When this Digimon becomes suspended, unsuspend it, and suspend 1 of your opponent's Digimon.
Lv.7 Examon EX3-074 SEC Mega | Data | Holy Warrior/Royal Knight [DNA Digivolve] Green Lv.6 + Blue Lv.6: Cost 0 [When Digivolving] You may place 1 {{Colour|green}} or {{Colour|blue}} Digimon card with [Dramon] in its name from your hand under this Digimon as its bottom digivolution card. When DNA digivolving, you may play 1 {{Colour|green}} or {{Colour|blue}} Digimon card with [Dramon] in its name and 12000 DP or less from your hand without paying the cost. [All Turns] [Once Per Turn] When this Digimon becomes suspended, unsuspend it, and suspend 1 of your opponent's Digimon.
Lv.7 エグザモン EX3-074 SEC 究極体 | データ種 | 聖騎士型/ロイヤルナイツ 【進化時】自分の手札から、名称に「ドラモン」を含む緑か青のデジモンカード1枚をこのデジモンの進化元の下に置ける。ジョグレス進化していたとき、自分の手札から、DP12000以下の名称に「ドラモン」を含む緑か青のデジモンカード1枚をコストを支払わずに登場できる。 【お互いのターン】[ターンに1回]このデジモンがレストしたとき、このデジモンをアクティブにし、相手のデジモン1体をレストさせる。